Just wanted to show off the system i got in my g35 sedan.
alpine video hub xbox w/ media center
Navtv adapter 2 MTX 8302 Amps
Pac input adapter 1 MTX 801D sub AMp
Alpine xm unit Alpine Type R 12" Sub (not shown)
2 Farad cap

The xbox is controlled by the button under the cig lighter. (check out xbox scene.com to see how to add a phone jack to the back to get it to work)
The cig lighter when in the out position works the alpine unit. Push it in and it makes the factory nav cut on (no it won't still light cigs)
XM works through the alpine unit not the factory unit. (it had to go)

 

The ir receiver (there are 2 one for xbox and one for alpine) are mounted under the ac display controls (above the tv w/ the temp) so you cant see them even if you look.
The amp is not in the pic cause the box is a standard box and takes up way to much room. the 4080 will fit nicely in there and give me my trunk back.
the amp rack which house all my junk is only 8" thick so trunk space is still pretty much all there

 

MORE PICS>>BIGGER please