Here's the thing: it depends on your car and what you are willing to do to try and make things work. Basically, if you have a car where you can easily peel back the carpeting so you can lay the foundation wiring, and you feel comfortable doing that yourself, then you should give it a shot with someone to help you. For example, if you have your subs/amps etc, you'll need a power distrobution block. Depending on your setup (if your going to put the PC under a seat/in the trunk), you may want 2 distrobution blocks so you can ground everything to the same place. If you can open up your head, you can run the wires you will eventually need for your PC (for me that was a USB wire, a stereo cable, and a VGA cable). For the surround sound mixer... I hate to say it but a >$100 USB creative can give you the same if not better sound. You could just wire the speakers directly to the creative, have that go to either the speakers themselves, or go to a multi-channel amp, then to the speakers. Real pain in the rear is getting the touch screen your front end. For that you'll need the right tools, and whatever material you would want to use to hold the screen in. If anything, that's whee I would be paying my money, but as for getting the carputer underneath the seat or in the trunk, that it easy enough. As for your USB hubs, check something like this out.