The car is an 80 Malibu,I have started notching my frame and i'm ordering all new 17" rims from Centerline with custom backspacing. The fronts are 17x8, 4.5" backspace and a 245/45/17 tire. The rears I'm scared about. I haven't ordered the rear rims yet, but from what I can measure it looks like the 315/35/17 tire which has a 12.4" section width on an 11" rim should get a 6" backspace leaving me with about a 3/4" to the frame after notching. Im wondering if a 6 1/4" backspace will work better, so I can tuck the tire in a bit to lower the car ? Does anybody have experience with this setup on a Malibu? Also how much do you think the rear end moves with urethane upper and lower control arms? Note, I do enjoy burning rubber sideways with a car full of people! :-k