Be seen other 71 swingers similarly optioned that came with 8 3/4.
Used to see them in the junkyards like that. I even pulled an 8 3/4 out of one.
Does it have A/C too? And /or rimblow.
There a package that has like rimblow, remote mirror, vinyl top, trim, p/s, that seems to go with a lot of 8 3/4 on 71 swingers. Maybe that plus disks.
I agree semed to be a common package I looked at one recently at the Turlock CA swap meet . If it has a rim blow wheel pretty good chance it has an 8.75 axle however disk brakes are a wild card some have some don't.... 318's or slant 6 318 seems to be more common with this package.
