-McLeod Twin Disc with Meba/ceramic lining, we have made 1400whp with these clutches, they are $1749 new, both from 04's, so they will fit all 03-06 viper engines. They are also rebuildable. I have two, one is in great shape, ready to go for big power, $700, the other is from another truck, the top disc and the floater look like it has been slipped/hot, I do not know the history but came from a stock 27K mile truck so its not high mileage. $350
-JMB B62X cam, no issues, $675 new, $300, will pick up 40whp+ even NA
-SCT X3, unlocked, has tune for an 04 pcm/procharger/cam $250