[rwhite65]

Just depends on what u intend to do with the car and how much you want to spend. There are different clutches that can be used in the clutch packs, sometimes more clutches can be added to the packs themselves.
Personally if I was doing a transmission for any stang I owned, I would do the following:
-Ask them to stuff all the (decent grade) clutches they could in the packs.
- shift kit
- tranny cooler
- temp gauge
- Quality T.C.
Remember, the number one killer of a tranny is Heat, so try to keep it as cooled down as possible.
Ryan