OK, so I've had the full on Super Shifter w/ all bushings for a couple of months. Its always transmitted a little more vibration to the knob, due to the stiffer bushings, which I don't mind. However, I'd begun to notice that at 4k+ RPM, the vibration was enough to cause a small rattle. Not a big deal, but since I'm a perfectionist I wanted to see if I could improve the situation. So, I wrapped the bare (control arm?) that connects to the lever with about 3 layers of Dynamat. This doesn't impede operation of the lever in anyway, but it dramatically reduced the vibration transmitted to the shift knob for me. I would reccomend anyone installing this awsome product consider this minor adjustment to the setup, which takes nothing away but a little NVH.