8 3/4 build

So I picked up an A Body 8 3/4 for 100. As you probably have guessed it’s a empty housing. My 67 Dart has its original 7 1/4 that it stayed life with.

I think I can find a b body center section relatively cheap locally. I planned to do 3.73/3.91 gears and Eaton Truetrac.

My question is about the axle shafts and brakes. First can I/ should I reuse the stock brakes from my 7 1/4? Or should I just do a disc swap.
Second I want to get something like Mosier, Yukon or Dutchman axles. I’d rather run taper bearing than green bearings and I’d like to not have to cut them. Any opinions on those three companies or is there a better option? I’d also like to do the big bolt pattern swap while I’m at it.

a center section is a center section...A..B..C or E body....
if you order the axles from Dr. Diff...you do not need to cut anything...
back plates....???...you really want to run B body backing plates which will allow you to use the large bolt lug pattern without any other modification....plus as there are no A body drums that will fit a LBP without drilling them....both the drums and brakes can be bought at any part store for the B body

make sure you tell DR Diff what backing plates you are using as the axle off set for the A body and B body brakes are different...