It is not difficult to add satellite radio to any SRT-10, coupe or convertible. The radio has an auxiliary input into which the satellite radio receiver connects. I replaced my head unit with a standard Chrysler RB1 navigation unit and added XM radio. However, before I did that, we added the XM unit and connected it to the stock radio. It worked fine. The XM unit is a Terk XM Direct XM-RVR-D-001, available online for around $200. That includes the antenna, which we placed in the front center of the dash. The installation is really simple for anyone who's ever done that kind of work.