Cabrio amp / Satellite antenna

[TBarCYa]

I have a 2009 A4 Cabrio, which I'm told is still a b7, and I'm looking to add a sub and to improve my satellite radio reception.

For the sub... I have the BOSE system but since it's a cab there's no rear deck and therefore no sub. The question tho is do I still have the amp that would power the sub and where can I find the output wires to test it out?

For the satellite antenna, I believe that it's in the trunk lid but I haven't removed the trim yet to see for sure. Anybody know for certain? Is there an upgrade antenna or can I use a standard XM antenna instead?

Thanks in advance for any help.

[miA4]

I have a 2009 A4 Cabrio, which I'm told is still a b7, and I'm looking to add a sub and to improve my satellite radio reception.

For the sub... I have the BOSE system but since it's a cab there's no rear deck and therefore no sub. The question tho is do I still have the amp that would power the sub and where can I find the output wires to test it out?

For the satellite antenna, I believe that it's in the trunk lid but I haven't removed the trim yet to see for sure. Anybody know for certain? Is there an upgrade antenna or can I use a standard XM antenna instead?

Thanks in advance for any help.

Honestly, even if it had the rear sub, that amp isn't strong enough to power an aftermarket sub. Your best bet is to either have someone install an amp and sub. they sell units now that have the sub and amp as one packaged piece so you don't need to run wires and install them separately.