Metric Standard

Does a gm 350 crate engine have metric or standard bolts? any documentation of this?
I dont know how old the engine is, it was in a very rusty plow truck i bought. I didnt even know it was a crate engine until i found the dual dipstick oil pan. Any idea of documentation by engine number?
all the newer stuff like in the last 10 years will be metric
Metric & Standard Measurement Systems
| | GOODWRENCH 50-PIECE STANDARD/METRIC SOCKET SET $5.80 |
| | Craftsman 9 pc. Metric Easy to Read Socket Accessory Set, 12 pt. Standard, 3/4 i $79.99 |
| | New Snapon Tools Standard Lenght Metric 10 mm Combination Wrench $19.70 |
| | GP – 3/8” Drive Standard Length Metric Universal $118.00 |
| | New Snapon Tools Standard Lenght Metric 13 mm Combination Wrench $18.70 |
| | New Snapon Tools Standard Lenght Metric 12 mm Combination Wrench $18.70 |
| | Ingersoll Rand 86 Piece 3/8″ and 1/2″ Drive Standard and Deep, SAE and Metric $268.34 |
| | Cummins Industrial Combination Wrench Sets Metric & Standard $30.00 |
| | AMPRO 29-PC GO-THRU HEX GEARED SOCKET WRENCH SET metric standard sae ratchet $34.99 |
| | ATD-12456 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 8mm $13.22 |
| | ATD-136016 ATD Tools 1/2″ Drive 6-Point Standard Metric Socket – 14mm $13.97 |
| | ATD-12459 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 11mm $13.23 |
| | ATD-136018 ATD Tools 1/2″ Drive 6-Point Standard Metric Socket – 16mm $13.97 |
| | ATD-124510 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 12mm $13.31 |
| | ATD-124516 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 18mm $13.71 |
| | ATD-12455 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 7mm $13.15 |
| | ATD-124517 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 19mm $13.73 |
| | ATD-124512 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 14mm $13.39 |
| | ATD-124513 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 15mm $13.57 |
| | ATD-124514 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 16mm $13.63 |
| | ATD-136015 ATD Tools 1/2″ Drive 6-Point Standard Metric Socket – 13mm $13.97 |
| | ATD-124515 ATD Tools 3/8″ Drive 6-Point Standard Metric Socket – 17mm $13.57 |
| | ATD-4106 ATD Tools 14 pc. 6-Point Standard Metric Impact Socket Set $41.83 |
| | SK 19MM Standard Depth Metric 3/8″ Dr. Socket 12 Point $8.19 |
| | AMPRO T71328 MINI IGNITION FEELER GAUGE – 16 BLADES – STANDARD AND METRIC $2.69 |
| | Craftsman combo polished chrome wrenches metric & standard $19.99 |
| | 15 Piece Bulk Lot Craftsman Wrenches Wrench Metric Standard $9.99 |
| | KTI 47 PIECE 3/8″ DRIVE 12 POINT STANDARD METRIC SOCKET $70.00 |
| | SNAP ON BEX13A 13 PIECE BOLT EXTRACTOR SET STANDARD AND METRIC – HARDLY USED!! $100.00 |
| | 14 NUT DRIVER BITS for Power Drill Standard/Metric Tool $7.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Craftsman 3/8 inch drive – Standard Socket – 6 pt – Metric – Regular Depth $1.99 |
| | Stanley 60-Piece Standard and Metric Socket Sockets Set NEW $45.00 |
| | Eklind Standard And Metric Allen Wrench Packs Plus 40 Piece Multi-Driver Set $25.00 |
| | NEW 5pc Gearwrench METRIC Ratchet Reversable Standard Wrenches Ratcheting $31.00 |
| | Snap On metric and standard line Wrenches $85.00 |
| | BRAKE LINE FITTING ASSORTMENT – Standard & Metric $99.95 |
| | New Craftsman 309 Piece Mechanic’s Tool Set 41309 Metric & Standard Kit 941309 $187.50 |
| | 13Pc Duo MM & SAE Stubby Ratcheting Gear Wrench Set Ratchet Metric Standard $59.99 |
| | Fellowes 49106 55 Piece Computer Tool Kit Black Vinyl Case Standard/metric $47.34 |
| | Aluminum Ring Sizing Mandrel Sizes 2-15 Standard/Metric $14.24 |
| | 32 pc Neiko 3/8″ Drive Duo MM & SAE Air Impact Socket Set Metric & Standard $39.99 |
| | 15 pc 1/2″ Neiko Drive Duo MM & SAE Air Impact Socket Set Metric & Standard $32.99 |
| | NEW 1/2dr Standard Socket 15mm 12pt Ea. SOCKETS – 1/2 DR METRIC 12715 $12.93 |
| | Business Source Standard Metric Ruler – 12″ Length – 1/16 Graduations – Metric, $2.51 |
| | BONDHUS HEX KEY SETS STANDARD AND METRIC $12.50 |
| | COLOR Tire Tread Depth Guage Gage Standard and Metric $6.49 |
| | LOT OF NEW 49 TRUECRAFT TOOLS SOCKETS 1/2″ DRIVE TRUE CRAFT METRIC + STANDARD $59.95 |
| | LOT OF NEW 77 TRUECRAFT TOOLS SOCKETS 3/8″ DRIVE TRUE CRAFT METRIC STANDARD DEEP $59.95 |
| | 1/2″ Dr. 30 Pc. Standard & Deep Metric Socket Set GRY14 $142.09 |
| | 1/2″ Drive Fractional & Metric 6 Point Standard Impact Socket Set – 29 Pc. NEW! $134.27 |
| | 25 Piece 1/2″ Drive 6 Point Standard Metric Impact Sock $200.54 |
| | Cornwell 14pc. Standard & Metric Hex Bit Set Ex-Long $62.95 |
| | Cornwell 14pc. Standard & Metric Hex Bit Set Short $56.95 |
| | 42 Pc. 3/8″ Dr. Standard and Deep Metric and Fractional $124.45 |
| | 3/8″ Drive Metric 6 Point Standard Universal Impact Soc $114.12 |
| | 33 Piece 3/8″ Drive 6 Point Standard, Deep and Flex Metric Socket SuperSet NEW! $272.37 |
| | 10pc Hex Allen Key Ring Wrench Set metric or sae $5.99 |
| | 10Pc. 3/8” Drive 12-Point Standard Length Metric Unive $128.28 |
| | 1/2″ Drive Metric 6 Point Standard Impact Socket Set – $48.99 |
| | 1/2″ Drive, Standard Length Metric Impact Socket Set I $57.86 |
| | 1/2” Drive 14 Pc. Standard Length Metric Set GRY1412M $52.35 |
| | 3/8″ Drive Standard 13 Pc. 12 Point Metric Impact Socke $51.65 |
| | CaR DEALER AUCTION 200 LICENSE PLATE VEHICLE SCREWS STANDARD/METRIC** $12.00 |
| | 40 PIECE SOCKET SET METRIC AND STANDARD NEW IN SEALED BOX $4.00 |
| | Wholesale Tool Lot 180 Sockets Metric & Standard 3/8″ & 1/4″ Drive NR $19.95 |
| | Craftsman 6 pt 1/4″ dr Deep & Standard Metric Socket Set 23 pcs New on Rails $9.50 |
| | 3/8″ Drive Metric 6 Point Standard Universal Impact Socket Set – 7 Pc. SUN3655 $76.51 |
| | 1/2″ Drive, 6 Point Standard Swivel Metric Impact Socket – 13 mm SK 34363 NEW! $43.16 |
| | SK #94562 62 pc. 1/4″ and 3/8″ Drive Standard and Deep Metric Socket Set $259.99 |
| | Tailors Chalk Measure Ruler Tool Metric & Standard $9.99 |
| | CRAFTSMAN 1/2″ DRIVE SOCKET SETS METRIC & STANDARD NR! NEW! $18.05 |
| | Snap On Standard & Metric Ball End Hex Key Set $28.00 |
| | WESTON 550 LB DIAL SPORTSMAN SCALE STANDARD AND METRIC MEASURES BRAND NEW $45.99 |
| | Fathers Day Gifts Stanley MaxDrive 60-Piece 1/4 and 3/8-inch Standard and Metric $49.98 |
| | GRY-1018M Grey Pneumatic 3/8″ Drive Standard Metric Impact Socket – 18mm $14.52 |
| | GRY-1012M Grey Pneumatic 3/8″ Drive Standard Metric Impact Socket – 12mm $14.02 |
| | GRY-1015M Grey Pneumatic 3/8″ Drive Standard Metric Impact Socket – 15mm $14.33 |
| | GRY-1008M Grey Pneumatic 3/8″ Drive Standard Metric Impact Socket – 8mm $14.02 |
| | KDT-80129 GearWrench 1/4″ Dr. 6 Pt. Standard Metric Socket, 7 mm $13.89 |
| | KDT-80134 GearWrench 1/4″ Dr. 6 Pt. Standard Metric Socket, 12 mm $13.89 |
| | KDT-80396 GearWrench 3/8″ Dr. 6 Pt. Standard Deep Metric Socket, 14mm $16.11 |