8 & 3/4 rear brake conversion to disc info
Dr Diff has a couple of rear disk brake conversion kits, put his stuff on the list of potentials.
I put one of his disk brake kits on a 8.75 using his axels with green bearings, went on simple and easy.
Cass is super on customer service and support before and after the sale. Tell him you have Yukon bearings and he will lay out your options.