If you were building a Mopar sleeper....
I just picked up a '67 Valiant 100 4dr. Was "soft yellow" now it's primer grey with red splotches (PO was practicing his painting skilz LOL!) Even has engine part shaped gasket gloop stuck to the hood. Already has the '73+ K, brakes etc. Got an 8-1/4 rear for it.
And I've got two 383's....stroke one, put a 5 spd manual in it and have fun!
My choice (budget permitting, which it doesn't LOL!) would be a stroker small block and a Passion 5 spd in my '74 Plymouth Voyager.....complete with all 4 (5 around Christmas time) kid seats and the hello kitty stickers my daughter stuck on the side window. Lots of room underneath for as many mufflers as needed for noise control. crappy faded paint and enough dings and dents to make most people wary of parking near it!