I installed a Ripper last week with the stock shift knob. I had ordered a different shift knob, but it had yet to arrive. I drove the car and was amazed with how much drivetrain noise I could hear with the new shifter. I loved the feel of the ripper, but the noise was not acceptible. I then used electrical tape and wrapped it several times around the exposed steel of the shifter's shaft hpng to deaden the noise. This helped alot, but there was still sifnificant noise. Finally, yesterday, my anodized, solid core Z06 emblem shift knob arrived from West Coast Corvette. I screwed it on with one layer of electritrical tape around the bottom threads only to secure the fit. It fit extremely tight, I don't think I could get another quarter turn. Amazing!!!! No noise whatsoever now. It makes no more noise tan the stock shifter, plus it's a ripper. Perfect fix for this problem. Plus it looks cool and the kno fels like it is one peice with the rest of the shifter, no subtle looseness like the stocker. Hope this helps whoever has a noise problem.