Headunit - I originally wanted to use a linear actuator, but those are pretty pricey.  I tried a popup headlight motor from the junkyard, but it was pretty bulky, and would need to have limit switches made.  So I went the simple route, and just made a lever that I can raise manually.  A black bolt head is all that's visible, and its down low, about 1" in front of the drivers seat base, so its tough to see anyway.  I also made a simple stand to support my Ipod when I've got it hooked up.

Speakers - The speakers are low end Kenwoods, mounted on aluminum brackets. MDF baffles are the best way to mount speakers, but sound quality wasn't really a goal with this system, due to the noisy exhaust.  The front and rear sound waves are kept separate using XTC baffles.  

Amp / Sub -  The amp is a 5 channel Soundstream amp, mounted on hinged brackets above the sub.  The sub is an 8" RE sub in a .5cuft ported box.  I chose to make the box with an external PVC port for something different.  The sub and battery are mounted on the upper shelf, and still leave plenty of room for groceries down below.