i would honestly go to an aftermarket place and get it done, a lot cheaper and less time. I am getting mine for 600.00 installed, with an alarm
^ ^ you call that cheaper?? you could drill the holes in the door and put the switches in, wiring isnt expensive, and if you know what youre doing , or do enough research on what goes where then it shouldnt be too tough, and installing a few window motors are time consuming yes, but not too expensive, about 50 bucks a piece.
R.I.P. Kasey N. Burleson