I bought a Kenwood radio that had sirius capability. The sirius unit was about $100 bucks, it still requires an antenna but mine works great on the dash at the left corner. All I did was connect the radio, plug in the sirius unit transmitter fins a station to use, make that pe-set and no worries. Works as good as any built in unit for a fraction of the cost. I did have a seperate transmitter at first but had no place to put it, I use my tach. Others have found some nice spots to put the transmitter too. Hope I helped, I love sirius radio, nobody else plays jazz the way I like it!!!
Rick