lower control arm clearance

My Barracuda has a Mustang II suspension with disc brakes and the lower control arms rubs against both tires. The car has the LBP and I'd like to use 15 inch Ralley rims (4 1/2 inch set back) that I got off an E body but I have clearance issues even with rims with a 4 inch set back, though the tire just touches enough to make firm contact (the second picture shows the rim with 4 inch setback). The car has never been on the road since the suspension has changed so the steering hasn't been set up. Would spacers provide enought clearance? Any other suggestions?