Well, after more digging I found this article -->>
Dana 44 Rear Disc Brake Install - - Jeep at Off-Road.com It uses brackets from The Streetrod Manufacturing Co and rear caliper from and 80's Eldorado.
Here is the parts list (new prices)-
TSM Bracket Kit – 2460 $270
Calipers – Cardone #184138, 184139 $178
Brake Pads – NAPA TS7070RM $25
Hose for driver side – Brakeware #77229 $12 (remove the steel bracket)
Hose for pass. Side – Brakeware #77324 $10
2 Banjo bolts – 13940 - $10
E-brake cables – Custom made by Control Cables, 562-949-0455
Here is a different way on a TJ. -->>
Disc Brake Conversion - 1
A IH 44 conversion with step by step information and a parts list/ -->>
Build up part 3 Rear Disc brakes - Binder Bench
There are many ways to get where you want to go. It just depends on how much work or fabrication you feel like doing...