Have you considered a 3rd Gen Hemi? They can easily make to power you are looking for.
I did actually, and I love those new motors, but I'm looking for a classic Mopar powerplant with this build. I'm planning to buy a new Challenger at some point, probably a Scat Pack or SRT 392, and I don't see any sense in having two of the same motor in different platforms.
I've been eyeing the 426 Chargers, the Daytona R/T 426 has the sweet spot of options for me. I've got some financials to clear up, so next year I'm hoping to pull the trigger on one.
If you're referring to the modern Chargers, they don't have the 426 available as a factory option (yet). But there is a lot of information coming from Mopar insiders that suggest one is coming soon to replace the 392.
