Anyone running 15x6 or 15x7 rear wheels on an early-a?

I have 15X8's all the way around with, I think, 4.5" of back spacing. Front tires are 195-60R15 and rears are 215-60R15. This is the way I bought the car and, Yeah, those rims are too wide for the tires they have on them. Springs are in the stock location which would probably limit me to a 235 tire on the back, hopefully 70 series to get a little height for highway driving, with a 7" rim with the same back spacing. Fronts? Thinking on maybe a 215-65R15 on a 7" rim or possibly a 6" rim. Thoughts?
Bob