For the 5MT, which was only available in the NA and the T5 thru 2004, (NA later??) is there only one clutch, or is the T5 clutch heavier duty? Also, how far back does interchangeability go? I picked up a clutch for next to nothing and have been sitting on it until needed, but the indy mechanic local to me implied that the clutch I bought might not give me the feel I expect. Since I have bought very few clutches in my lifetime, I have no response to his statement, and he has me doubting using this one.