My buddy has an early model Nova and found a short block 396 for it. He is looking to put on the 781 heads. Since he lives out in BFE, he sent me a picture of the block and the pistons. He says they are pretty flat. However, the look to be somewhat domed to me. Maybe it is just my eyes. Can anyone tell what kind of pistons these are. He is looking for a pump gas bbc.