In my opinion it does. Auction results prove it out whether it’s a 409 car, mustang, corvette, etc. I think it’s even more so with a 409 car. There just is really no good way to authenticate these cars without a matching block or even more rare documents. It seems most restored 409 cars have neither which means to me that they might as well be clones. And when looking at clones, the more accurate and detailed will bring more dollars.I get why date codes would matter and add value to a car with VIN matching block, but I'm struggling with why it would matter with a clone car, would it make a clone car more valuable to have correct date codes?