Hi, I'm considering purchasing a 62 Bel Air Bubble top 409/409 car that has had a frame off restoration. The problem I'm having is the people are saying it's a date code correct car and will guarantee that it is a original 409 car. It used to race in the Klamath falls Ore area in the 60's (Running Bear). But the block does not have any #s stamped on it (passengers side front). So does this mean that it's not the original block? I would assume that the original block probably was replaced long ago. The head and carb #s match etc. I just don't want to put out this kind of $$ if it's a clone car etc. thanks guys, RT.