I have just purchased a 96 gt mustang and am in the process of building a street strip car. I will be installing a 5.4l with a lightning manifold and a tvs2300. The motor on 17 psi made 635rwhp and 636rwtq in my lightning through the 4r100 and 2600stall. I want to keep the gt a 5 speed but what trans will hold up to the torque the 5.4 will make on 21+psi and 750 lb ft?