Is is possible to switch a factory radio with one with a 6 disc changer from a salvage prius? There are some good deals on eBay and I would like the ability to have a changer while still keeping the MP3 function. Also, I use CoastalETech's Lockpick 3 and a factory XM radio. Any problems? Sorry if its been asked before, but I did try searching for it for awhile. Thanks!