Backspacing Question...?????

All my experiance is with 72 and earlier however I think the later model A body cars were nearly the same with the exception of bigger bolt pattern.

I would say use the 3.75 backspacing on rear it should center the rim in the wheelwell and allow the biggest possible tire to fit on the wheel with out rubbing. Probably could put a 245/60/15 on it. On the front probably the same back spacing as the rear unless they only have a 3.5" backspacing for the smaller rims.

Hopefully someone with a later model car can verify my thoughts. I like my cars to have a lot of tire under the fenders and not rub on the outside of the fender.