Ok someone was gettin rid of a set of cragar s/s. So i picked them up hoping they will fit on my 1994 mustang. I tried the backs and they stick out a little, but im not too worried. But the fronts are the problem (15x9 rims with 4.5" backspacin). They wouldnt mount because the spokes were hittin the brake caliper. Would i be able to fix this problem with wheel spacers? If so what size would i need?