TREMEC Super-Duty SN95 T5 Transmission for 94-95 Ford Mustang $2,505.00 Rated 5.00 out of 5MD-552-0251-94 The 94-95 SN95 Mustang/Cobra Super Duty T-5z is a step up from the T5s used in the 1994-95 Mustangs. The gear sets in the earlier t5s were built with a 3.35 first gear with a .68 overdrive. The Super Duty T5z is built with a 2.95 first and a .63 overdrive idea for 3.55:1 axle ratio Add to cart