R&P for A-bodies
R&P would be nice but I would be hard pressed to give up my torsion bars. They're not only a really cool design that can be made to work incredibly well, they're part of the character of the car.
If I wanted a car that drove like a modern car, I would buy a modern car. I'm more interested in making my Dart drive well...while still being a Mopar A-Body.
Just my opinion.