I have added the True Track system to my '03 UC. I actually went for their "Tracula" package deal which includes the True Track missing link for the back of the tranny (oil tank), an upgraded front motor mount, bronze bushings, new isolators, replacement pivot shaft. With these up-grades, the bike does feel like it is on a rail. No more of that disconcerting mushy feeling in a turn, or even on the straight and narrow where you feel like the wind is knocking you around.
IMHO, the Glide-Pro upgrade is necessary, but not sufficient. You also need something to stabalized the rear of the engine/transmission like you have on the front of the engine, and at the top of the engine. Otherwise, the swing arm is able to flex left and right giving you that uncomfortable feeling. There are a number of other alternatives that the folks here have suggested aside from True Track. I just like the package deal they had that included what I have listed.
TQ
Hey, if you don't mind sharing, how much did that whole package cost you? Did you install everything yourself or have them do it? How hard was it and how long did it take, if you did it?
Thanks!