...........I have a rear out of a 68 road runner in my 74 duster.........my rims are 15x10 in wide centerlines with 5in back space.....have p295/50r15 gy eagle gt2s........i have 1 3/4 in to my springs from the tire buldge.......my tires stick out about an inch, so 6in bs would be better on my car.......kim........