My buddy has a 1970 Roadrunner that's been all built up. It's not "pretty" but it's 414rwhp and 458ftlbs in front of a pistol grip 4-spd. I sure would like to find me a Roadrunner/Satellite to fix up, they look tough!
He put the Mopar "drag" springs on it and poly bushings on the front bar and it realy drives well. It will actually take a corner with those minor mods fairly good. BTW, it also has factory 4-piston front disc's, I guess that's fairly rare and because of those it actually stops good too. I think with a rear bar and some stiff torsion bars and nice shocks it would really dive NICE.
Here's a picture: