Need some help with rear axle position

My OE A-body 8 3/4 housing, with A-Body axles, the CL of the perches (both sides the same) to the outside of the bearing flange (not the axle flange) is about 5"

If you cut down a b body or greater housing and also used cut down b body or greater axles the ~5 inches might be closer to ~4.75" assuming you kept the factory axle bearing flange to axle bearing flange distance of ~52 1/4" to ~52 1/2"

I am basing some of the dimensions above from this website others I measured. (the reason I am noting approximate dimensions is it was dark in the garage and my housing is face down so I had to measure over the hump etc)

Everything You Ever Wanted To Know About The 8 3/4 Axle

Any chance you have an A-body axle on one side and a B or up axle on the other? The A vs B and up and not the same from axle flange to bearing (A is shorter)

Any chance you have wheels with different back spacing?