I'm using 79-81 TA rear discs. Not the best choice due to ratchet rear calipers but work OK for me. Kept a '81 4 WD dual diaphragm booster and 1 1/8 '81 4 WD plastic reservoir master.
No off the shelf axles but Dutchman can do them if you order them. Be SURE the axles are 30 spline 10 bolt if using C clips vs 12 bolt 30 spline axles. C Clip button thicker on 12 bolts.

Hi Skip:

Thanks for the comments on my differential posts. Do you run rear discs on your T/A? I understand it's not too bad to swap to 3rd gen discs in the rear. I hop you don't mind a few questions - Wondering if that set-up works with stock snowflakes/rallys? I assume you need an extended hub on aftermarket axles to make it work - does somebody offer them off-the-shelf? Lastly - what master cylinder would be needed?

I tried asking before, but I don't think my PM went through - but apologize for the repeat if it did.

Any info appreciated.