Build a 46RE and use my trans brake with reverse manual valve body, had harden shafts, Billet drum ect and 1000+ HP is no problem. Here is my sales pitch: P NR 1 2 3 4. shift pattern. NO kick down linkage NO shift solenoids NO governor sensors NO controlle module CRT has the only trans brake valve body with all gears on the manual valve & Lock up in any & all gears also fits RH and all RE transmissions.