It appears I'm back in the MOPAR world...

Welcome. You need to ask yourself a BUNCH of questions before you decide on a drivetrain. A modern hemi drivetrain will be expensive (unless you get luck and score a great deal). You can easily get 375 - 400 HP out of a streetable 360 or 340 for a lot less. Are you concerned about resale and/or having way more in it than you could sell it for?