acceptable bs on a 18x8 mustang wheel...66 cuda

Ooo...good point zhandfull-I think an E body axle is almost 4" wider flange to flange than an A body...get it in the car, then as z said, take measurements and go from there.
so the wider the rear axle, the more backspacing is needed? excuse my ignorance, backspacing is a mystery to me and im trying to learn how it works. thanks for the responses.