i sprayed a light gray primer in my wheel wells after beating in the obvious rub places(rear of front wells, mostly). after a little more "fine tuning", i only get a little rubbing when i stuff the wheels.
i modified the body mounting to lift 1"+. this helped, i'm sure(and real cheap).
very little rubbing in back.
i tried 8" rims(unknow backsp.)but got more rub.
i'd think you can make yours fit ok.