Hello. I have a 1992 Civic EX with an Alpine 5970 CD changer and TDM 7574 head unit. I'd like to get XM satellite radio, and would like to know if Alpine or any other company makes a single DIN XM head unit that will also control the changer. I'm also curious how much I'll have to spend to get XM, and if anyone can recommend a place to buy the equipment. Thanks in advance.