Going good, how 'bout you? Is your car back on the road yet?
I measure the F-Body 8.25" at 59.5" drum to drum. Same as an early B-Body 8.75". It was a cheap alternative and should work fine for me. I don't know for certain what an A-Body 8.25" axle width is, but the 8.75" is like 57.125" wide drum to drum, so I would guess the difference would be a little over an 1" per side.
I was planning for a 8.75" out of an early B-Body, even had a 3.55 pumpkin and a sure grip, but I couldn't ever find a housing and axles, and had the F-Body axle already from the Valiant project. Of course, as soon as I started spending money on the 8.25" (sure grip, etc.) I tripped over a complete axle I could have used.