I am mocking up for tires,wheels,rear width. Here is what I believe I want. Please chime in if it doesn't sound right. 8 3/4, offset hangers, 4.5 bs 15 x7 cop wheel, shorten housing sperch to end by 1", perches moved for new hanger 1.5" 255/60-15 tires. They look like it should work,If I go to a 15 x 8 4.5 bs will the tire still fit?? American racing only makes slots 15x7 4"bs or 15 x8 4.5"bs