If you have the T5 with the gear ratio chain that begins with 4.03 (first) and ends with .86 (fifth) and a 3.07 or 3.08 rear end you will like the combination a lot. The first three speeds will match the OEM overall gear ratios so you can use it as a pickup, fourth gear will be a 25% reduction from the old 4.11 rear end and then fifth will drop that by another 14%. Good luck!
