I changed the drive gear on the output shaft of the T5 in my Coupe to a black 6 tooth. I did this to give me a better range to drop back in gear or move up in gear in the rear end and with tire changes. It is not hard to change and you can do it in the car if needed but its not fun...been there done that. Last time I pulled the T-5 it took a day to R&R it and change the gear.