BluePrint Engines Gen III 426 Hemi crate engines now in full producion.
BluePrint could get in cahoots with a billet block manufacturer and build any engine a customer wants. Not sure how many customers would like the price of them though.
As far as I'm concerned, I'm grateful to see Mopar crate engines offered. We're normally stuck lucking the pan while the Ford and Chevy guys eat cake. At least we're not like the AMC guys and stuck with an empty box.