7 1/4 width question....after searching

72bluNblu said
Right, but my point is that the A-body 8 3/4 already had a different track than the BBP 7.25 and 8.25. So why would you assume they’d be worried about the SBP and BBP 7.25’s being the same track?

I didn't assume they'd be worried at all. I admitted I didn't know for sure about the measurement difference in the BBP vs. SBP rear axle assemblies. I've swapped them using the same wheel and tire size and had the same clearance in the wheel wells. Like I said, if there's a difference, it isn't much.