Swapping Out My Installed Xm Radio For Sirius

[fdnyfish]

I have a 2010 RX350 with factory XM radio. The radio has a SAT button on it. does any one know if the XM receuver is built into the radio or is there a XM receiver connected to the radio somewhere in the dashboard.

I m interested in swapping out the XM for a Sirius receiver (if it is not built into the radio head).

Has anoune done this?

I see there is a Sirius SCC1 Tuner out there, wonder if this would work in the RX?