Got the YJ prop valve installed and finished deleting the load sensing valve. Ran my new hard lines on the 8.8 and used the pressure bleeder to flush all new DOT4 through the system and have a rock solid brake pedal. It was pretty mushy before with the drums. Something was wrong with the rear proportioning valve before, because the front shoe on both sides was rusty like it hadn't been touching even though it was adjusted out properly.
Anyways, it'll lock up all 4 now. Much happier with the brakes.
Although I do need to investigate, under hard braking, the TC shifter is bouncing around. Need to check my tranny mount.