I put a kenwood sirius ready reciever in my 05 prius and added new speaks and tweets in the front...WOW what a difference. im in the car alot and had to get rid of the stock one. I am using a sirius Blaupunkt SR-04 through the air satellite and it sounds great. just tune the sat and the radio to the same station and hello satellite. as soon as my tuner box comes in im going to only use the radio. There are a few tricks to get the display to work properly so make sure whoever puts it in knows what they are doing , or you can email me and ill give you the pointers you need...Good luck! Dean