Am I dense because I can't seem to find it on Tom's site? Might as well do a little comparison shopping. Tom, I must be looking in the wrong place? Do you have a direct link? Is this for the official BMW part that I see on Circle?

voerman - wouldn't they be required to fix the problem regardless of what you're trying to install? It looks like it being under warranty because of a defect that they would have to fix it, even if you're trying to install something entirely other than the Sirius receiver?

It looks pretty simple to do, but I wouldn't know how to take that sharkfin off either.

Thanks for the information thus far everyone and thanks for the warm welcomes!