I have a Centerforce DF clutch in my 94 truck that is going on 6 or 7 years now with no adjustments needed. It works good, but I the only issue that I have it that it will not hold the truck in place without the parking brake the way that my "worn-out" stock clutch did. For the 2RZ-FE/R151F swap, I have a Competition Clutch #1620 6-puck race clutch going in. The guy that I bought that clutch from told me that Centerforce Clutches are trash. I have heard good and bad, but my experiences are good so far.