The old Firepower DeSoto Hemi's were 1st Gen identifiable by the distributor in the rear. The 2nd Gen's were the 426 "Street Hemi" that were available in our favorite muscle cars here in Mopar land, in the later '60's and early 70's identifiable by a distribtor in the front of the engine. Lastly you have the modern 3rd Gen Hemi's, i.e. 5.7/6.1/392 crates..., they have no distributor.
The Alter-k-tion is a great suspension and is widely confused by some as a drag race suspension but they really adressed alot of geometry issues that some aftermarket "drag race" suspension systems seem to ignore.
The XV systems obviously are superior but there are, as you stated, a place for them. It would have set me back alot on my 'cuda, budget wise, and for the benefits it just wasn't worth it. Now if I can just get those winning numbers....