I'd ditch the T-4. The sr-4in my chevy powered jeep has been replaced twice and rebuilt once. The guys at Advance Adapter tell me that the T-4 and SR-4 are about the same tranny. They didn't even think that the orld class T-4 they sold would be worth buying for me since I have the chevy smallblock and run 35's. Seriousy consider putting in a tougher tranny unless you don't plan on being too hard on the jeep or run ral small meats.