1971 or 1972 Factory Stock Recipe. Period.
They run great on regular gas and they have power!
My 69,000 all original 71 383 Superbee runs like a bat out of (meatloaf)! Smokes the tires with ease. All stock drive train.
I have an 88,000 mile 440 from a 72 Imperial in my 84 crew cab dually with a cap and it smokes the tires with ease and runs great with its 4:10's and auto.
Mother Mopar already figured it all out if you want your ride to be low maintenance and fun.
All the money you pour into making it "fast" for the street is mostly realized when your fast car is beaten by the next guy.
Its about having a nice ride with some power for fun - not about having the fastest.
My says build something affordable that you can enjoy.
Cheers!