I am installing aa Dana 60 front, 14 bolt with disc brake rear in my 88 YJ. I did the E350 master cylinder swap a while back with my Dana 44s and it didnt stop that great. I think I need to swap the brake booster with the 1 tons now. What brake booster would good for my set up? Do I need to remove the o-ring from the YJ's proportioning valve or put a different one in? Any info would be appreciated.