I've been reading through a ton of topics, but I haven't been able to get an answer to this somewhat specific question. I recently purchased a 2008 Edge Limited with SYNC and it didn't come with Sirius and I would like to add it. It sounds like I can go to a dealer and pay around $400 to get it installed, but I would like to save myself a few bucks and do it myself. What I can't seem to find the correct part number to purchase and do the install. Does anyone have the correct part number for this type of install, I know that SYNC complicates things but I do want to keep the SYNC functionality?