Depends on your fab skills. Easiest would be to call TSM
and order up a full bolton setup; with or without parking brake.
If you want it cheaper, you could go with front FSJ rotors and calipers and make a custom mounting bracket similar to what they sell at TSM. That would mean you'd have no e-brake.
Or you could the same rotors, but use Caddy rear calipers with the integral rear parking brake.
Or you could find an early 90s Isuzu and snag it's 6-lug rotors and calipers with integral parking brake. You'd have to make a bracket to mount the caliper, might be able to modify the stock one.