dhenry - I already have all the other components figured out and/or working (I can't test everything yet since I'm in Afghanistan and my truck is in Missouri). I just didn't want to tear out the stereo until I had a replacement option.
dxw00d - Thanks. I have no idea how I did not find that on SparkFun, seeing as I spend an inordinate amount of time on that website. Now I feel silly.