The Gen3 Hemi factory blocks can handle more torque and horsepower before failing than production small blocks, and the heads flow a lot of air.
Plenty of guys making them fit A bodies, so no real reason not to run one, except I mostly have street junk and it's been way cheaper to build Magnum engines.
The 5.7 versions of the Hemi have really come down in price though, and are easier to find as cores in junk yards now.
