D100 rearend in A body

I was curious if a rearend from a 75 D100 would fit an A body? To my knowledge the trucks came with 8 3/4" rearends? Is there a axle width difference?
Got side tracked and didn't answer your question...lol. I think an A100 rearend is closer to fitting than a D100. Check the link below for axle widths.

An accurate 8 3/4" rear axle width list