I'm not worried about sync. The wiring harness already takes care of that. Its the fact that Sirius is incorporated into the stock head unit, so once I get a new head unit, I need a new way of getting Sirius.
And I thought that you needed a separate Sirius tuner. I know most headunits are capable of Sirius, XM, or SiriusXM, but I thought you needed the tuner.
Look at the Sirius tab, it says you need a box to make it work. If there are any units that have it already incorporated into the head unit, please share!