[no1udknow]

I have a block out of a 76 in my truck apparently, and on the front of the block by the engine code, there is a partial vin stamped. It does not match my truck qhich was how I quickly figured out it was not the stock engine, but I thought it was interesting that it was stamped there. As far as the rivets go, unless a person got the truck from the factory, no one could vouch for wether or not their vin plate had been off. Most folks would not notice that they are not rosette rivets. But if your truck has plain rivets and you took it to a car guy, or even a legitimate auction, they would definitely call you out it. I can not say for other makes, but chevrolet started using rosette rivets in 1965. I always see paople say things like "they probably just ran out" or "thay probably just made a mistake when printing up the SPID". I highly doubt oubt that an auto maker would risk heavy fines along with and investigation that would likely result in more fines. If Q/A saw the wrong rivets, they would have been drilled out and replaced.