It seems that more and more people are putting less stock in "numbers matching". My car has a 400 from a 68 full size Pontiac that was recently rebuilt this past summer to RamAir III specs. I am running a Q-j from 68 etc. My goal is to build my car as close to 100% stock as possible. I enjoy building my car and I find going stock to be a fun challenge. I figure I could never afford to buy a "number matching" RamAir III so I'm building one. I would never restamp my block and or try and pass it off as authentic. That's what is nice about our Birds, with PHS noone can pass our cars off for something they are not...