wanted 8 3/4 rear end

I run a 67 8 3/4" in my 68 valiant & I was running 15x7" rears with P235/60R15
with no problems.I'm now running 17x8" Mustang Bullitt wheels which fit the B-body axle perfect.I just moved the perches in.Plus you get the big bolt patern & 10x2 1/2" rear drums instead of a-body 8 3/4" smaller drum set-up.It's win/win.