HP aint cheap, especially NA HP. Dont matter what brand in that case. Look into the mountain motor stuff. Thise are basically $1000+ per cube engines..

FWIW a set of 12 degeee Raptors are $7K just for the heads. That is for a comparable BB Chebbie head..I think you will find that the Predator stuff is in the same price ballpark as comparable heads for the other makes.

IMO if you are buying all new stuff trying to build 1200+hp naturally aspirated you are gonna spend similar money on all of them. Now the difference being you can find good used Chevy and Ferd stuff out there, not really much Mopar stuff out there. Also there are a few options for the bowtie guys to get there.