Mopar has some nice choices at the 1000hp level, not so much at +1200hp level. That's going to be more of a one off, but it can be done. Me, I like the moved Center Line, 4.84 bore space 655 Millenium Hemi that Best Machine did a couple years ago. Made north of 1350hp...Problem is, no one makes a cast intake for those heads, so that leaves us just one choice...

A predator head engine. Problem is the cubes....I don't think there is a moved center line block & head for those available, but if there is, I would go that route but those heads do use a Hemi block, so maybe Best Machine can do another one of those blocks....no idea.

Lastly, as suggested, the Pro-stock Hemi 99...But again, the cast intake is the issue...Looks like those use a chevy 4.9 or 5.0 bore space block. Makes sense if you think about it. the chevy guys use non-skirted blocks like PS, and whomever builds one of these is likely to use a GM trans....block would typically be all setup that way. There are a couple for sale right now. Check RJ and For A-bodies only.

After all these years, we have trouble getting stock bore space replacement blocks, let alone anything after market to go even further with...Kinda tells you where the Mopar hobby is going...