Damn, you guys (and gals) are sick! I thought I was doing a swell job in the Bug with the system I built, but these are seriously nice!
I haven't done the X yet, but that'll be a nice project one day...
In the Bug I have the following, all in hand-built enclosures, install, etc. Sorry I don't have all the components specifics, I'd have to look them up... They're a bit dated, anyway - but it totally kicks ass for my needs.
- Blaupunkt cassette head unit
- Philips portable CD player
- FM signal booster
- 400w 4-channel amp with 2-channels bridged for sub
- Component/matched tweets, mids and woofs on both left/right sides in rear
- Coaxials in kicker panels on both left/right sides in front
- Single 15" sub strapped to roll cage
...I forgot how I powered the fronts, offhand. They're mostly for fill anyway down in the kicker panels, so I think I might be going through a 150w amp.
(Yeah, it's down in the garage, and it's been a while, heh)