Testimonials:

Here is Richard Bramlett’s 1966 mustang coupe that is nicknamed the Colt 351.

It is equipped with a built 351W and a Modern DriveLine, custom built, T-5z. Richard built his 351W to produce a lot of torque so that he could drag race the Colt. With 25+ passes down the quarter mile, his best ET on street tires is a 12.6 seconds @ 113mph and with slicks 12.3 seconds @ 112mph.

Here is a 65 Mustang that had a T-10 Four speed with 4.10 rear gears.

The T-10 four speed was removed for a T-5z five speed with 3.25 rear gears. The original clutch linkage was removed for a clutch cable system. Drive-ablity and mileage have much improved.