Gimme Me A Brake!

I believe scarebird makes a kit for less than both of those kits. Also at your local junkyard all of the parts off an 80s dodge diplomat should have the brake parts you need to convert to disc brakes.

Many members here also probably have the parts you need.I know I have extra hoses, calipers and rotors sitting in the garage....

To convert to bbp you need 5×4.5 discs, disc/drum prop valve, disc drum MC, new hoses, and calipers. I pieced my kit together which was a little more expensive but if I did it again I'd probably buy the scarebird kit.