A body 8 3/4 or B body 8 3/4 ?

If there's any difference it's sure not noticeable. I converted the front brakes on my 68 Cuda to 74 Dart disc brakes (big bolt pattern) and although I have not measured anything it sure doesn't look like the front track is wider. I have a stock drum setup laying in the garage and next time I have a wheel off the Cuda I'll measure things.