I have a 72 demon. I'm running 275/60/15 bfg tires on the back and they barely clear the springs (lots of street miles and you can barely see the rub on the tire) and the body is lifted some to clear the outside (arched springs) I think I could drop it down but it would be sketchy and probably require rolling the lip.

So I didn't exactly answer your question, but I hope I helped. By the way the wheels are wheel vintiques 15x8 rallys