15" steel rims for (4") small bolt pattern?

I've since sold the car but I put 15x7's on the front and 15x8 on the rear of my'71 duster. They were small bolt pattern rallys. I'm not sure what the backspacing was, but they were made by wheel vintiques and I got them through Summit. Just talk to the guys there they should help you out on the backspacing.