Not sure. I did not get it. Sirius is a LOT less flexible than XM with regards to free months. I know some folks who got it dealer installed have gotten free months...but then again, they (over) paid big time for the install.
I got it! I bought The OEM kit from Coastal, installed it myself. When I called Sirius I told them I just picked it up from the dealer. They didn't even hesitate to offer me the trial. It shouldn't matter who does the grunt work to get the discount.