I went through most of the same stuff you are going through 2 years ago. Here is a suggestion; Get rid of the goofy bearing and seal deal in the rear and get these:
Team CJ system bronze
I also used Wilwoods and made an e-brake set-up that mounts on the driveshaft. The disk came from Speedway and I made the adapters to mount it on the pinion. I used a Wilwood mechanical caliper and made a bracket to mount it. The original e-brake handle was used and a cable from a go-cart was found on Ebay. The disk was from their 9" e-brake kit.