I've got my 71 challenger restored pretty much like I want it..it's the rear end is a little bit low..I'm running 245 60 15 on rear and 440 4spd motivator. The tires are very close to quarter panel. I have paperwork showing previous owner replaced springs approx 30 years ago. Should stock springs from summit (mopar brand) raise rear end enough.I would be happy with half an inch or a little more. I think the ones summit sells are the heavy duty ones for 440 s. My car was originally a 383 up.
