Quote:
Originally Posted by 68 P.O.S.
Chevys generally had trailing arms as standard and leafs as an option. GMCs were the opposite. Also, there is no "numbers matching" for these trucks. GM didn't keep track of engines in trucks, so there are no numbers to match. By running the numbers on the block, you can determine if its the correct engine for the truck, but not if its the actual engine that came in the truck.
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By some measure I disagree about numbers matching, though you're not exactly wrong either. Nearly everything I pulled off my project with a date stamp shows April 1971, which is a month before the build date May 1971. That and period correct stamped part numbers. Among other parts that includes the block, intake and transmission. That and the frame is stamped with the serial number.
So yeah, you can never prove some of those are original parts, but with that kind of consistency, period correct and that..........IMO that's numbers "matching".