Porting Big Block Heads

Why does anybody run anything but an LS?

Because I'm not a Chevy guy, if I was I wouldn't own Mopars. Chevy Engines don't belong in Mopars, I don't like Chevys, I don't want anything to do with Chevys. Hemis are expensive I am working on a 1st Gen DeSoto Hemi now. I would like to build another 1st Gen Hemi some day. Mopar Big Blocks are cool.

Anyone out there that can actually answer the original post?