Ok, this obviously won't blow anyone's ears off, but I thought I'd throw it up here for those of us who might be looking for a simple audio set up for our carputers:
Cinemar AMP152 Modular Amplifier
While it looked pretty cool, and it boasts "Room filling power" I'm wondering if it might be a little weak for even the most basic stock car stereo. Worth checking out though. If they had one that put out 40Wx2 I'd get it in a heartbeat.