I put a 'gain knob' on my sub woofer amp. It allows me to control just the subs, which is VERY important in the mp3 world. When you dowload music, you can get songs that were not recorded at a high bitrate, when this happens the base is erratic from song to song. So this allows me to run it up and down at the flick of a knob. I also got my new floormats and my new headlights, so I thought I would show them off at the same time. Also I made a custon Microsoft Zune adapter, it slides in and out of the cented console, it plays vides, movies, and whatever music you want, it even has a remote!
Jeff