Originally Posted by
GraphiteGhost

It may be that part. Strange things happed at speed, anything can and does 'vibrate' at different frequencies. If that is all you noticed, go ahead and find that part (maybe in a scrap yard or recycler). Remember, you can also use a MB SLK-320 series from 2004 (ish). You didn't mention which you own but the drivetrain is damn near 100% SLK-320 (N/A) or AMG-32 (SRT-6) series in the 2004 era. Have you figured out how to get that part off, to compare it to something you can pick up? Also, you can delve into the factory service manuals to source that part (free in the downloads section). There are quite a few members here also that can help you source it if it is available. It'll take some homework (unless someone else chimes in with the ID of that piece), and
before you take it out make sure you find out if it is an adjustable part (mark the settings like length and points of measurements). You might still have that 'vibration' after it is replaced so be prepared for that as well. Good luck!
.
Yea it's a 6spd 3.2l NA. I'll look through the manuals see what I can find. There's definitely a shortage of parts cars around for me to pick through. Hopefully I figure something out. Thanks for your reply.