on my 68dart with a-body spec 8 3/4 and moser axles it does make it a 1/2" wider over all..1/4" each side

I ran weld 7x15 with 4.5 back space with a 245/60 15 in the untouched wheel wells and fender lips

fit in the center and had a 1/4" at the fender lip and a 1/4" at the spring and tire bulge

floped the a-body 8 3/4 in the 85 truck and ran the 12" rim with 4.5 bs and the 29x15x15 M/Ts

same 1/4" clearance on the spring and tire bulge and fender lip on the stepside

what has been done to the 8 3/4 in your A-body????

does it have the A-body 1 3/4" brakes or does it have the B-body large brake offset on the axles with the 10" drums and 4" wbp???

dont recall what you said rick..I know it has the long studs,IIRC you said 10" drums