ted it sounds like the wisco pistons you are looking at are the same ones that are in my 440 short block.my pistons are so posed to 0.012 down in the hole. with a 0.039 head gasket and a 74 cc Indy head i am so posed to only have 10.5 compression. but the Wallace engine calculator says i will have around 12.2. ted i would just buy some diamond 14cc dome pistons. they are so posed to be built to work with the edelbrock/ mopar aluminum heads. what happened to getting the the stoker kit?? Mopar65