I want to install a exhaust brake on my 2004 with a auto. I read some where that in the trans. there is a thrust washer that will give me problems. Can some one with a exhaust brake on one of early 2004 tell me if they are have any trouble with this, or have any problems with their trucks after they installed the exhaust brakes? I know about the warranty problems with putting this on a auto.. I going to keep this truck for a long time so I just going to install the brake anyway. thanks Keith