3-4hr labor x cost of 1hr of labor?

or do it yourself and save $$$ but you have $$$ so shouldn't matter too much.

head unit installs are pretty simple, unless you need something custom done. installing an inverter is not difficult at all, same with the xbox. LCDs depend on if they are already in the headrest or if the head rest needs to be cut to put them in. again not difficult with a dremel