Hi all ! So I've seen a '72 which is described as a factory 402 car. The windshield VIN 5th digit is a U so that part ties up. But the odd thing is this - all of the original paperwork shows the same VIN but with a K for a 350 instead of the U for the big block. Is that how these were turned out back in the day when they were new for some reason ? Does anyone have any explanation ? Thanks everyone !