I think on Saturday I felt the clutch slip on a hard upshift from 2-3. It did it again on Sunday going 70mph and dropping into 4th. It could have been traction but I doubt it was that at my power level. I read around a bit and dont see many options out there for our cars. I saw a review on the centerforce but it seems they're still working the kinks out. Any suggestions? Im guessing the LS9 doesn't work due to the bolts.