i been searching all the oem sites and i can't find a particular piece, the exterior window seal on my driver's side is broken, the part that actually screws into the door that stretches from the side mirror all the way to the end of the door. Anyone know where i can find one of those?

 

Are you talking about item #1 on this page:

http://www.trademotion.com/partlocat...=1&catalogid=2

If so, get it from Performance on any other dealer.
Or, you can check the Marketplace->Private Classifieds for somebody parting out a door or a Z.