Can I hook them both to the z2 ? If so, will they both be available on the main screen to go from one to the other. How do you do it ?

Thank you for your replies. I was wondering, should I put the xm or sirius first, or does it even matter ?

Also, I seen some posts on this site about the SIR-PNR2 having problems. Should I go with the SIR-PNR2 or get the SC-C1 and CD-SB10 ?

Yes, just daisy chain them together. P-bus out from one to the other

How do I do that ? I have a GEX-P920XM, If I get a SIR-PNR2 will I need anything else to do it ?

It comes with all the cables you need

How do I do that ? I have a GEX-P920XM, If I get a SIR-PNR2 will I need anything else to do it ?