If a 360 fits in these trucks why would he need to stretch it to make the hemi fit? Theyre the same size roughly, even bolt to the same trans. Or did he do it just for fun? Also if you plan to swap a new model hemi don't get a first gen, get a 2nd gen (COP style not the cross-fire style) The first gens are bad for breaking valve springs and chunking rods. I've replaced a few of em at the dealer already for these conscerns.