Is this at all possible?

XM came installed in my car from the factory I have a AVIC D3 and I listen to sirius. But could I connect XM to my unit some how.

This will all be of no concern if they merge but in the mean time if it's not hard I might do it.

I have XM free for a year.

Nope

Yeah I doubted it but you never know.

I guess it's physically possible

just takes a lot more know how than I have

Oh well I guess when they merge it won't matter anyway!!!