My Dad is planning on selling me either our car or truck when I am in the position where I need a vehicle. I really want the truck (2000 Chevy S-10) because I enjoy driving it more, but it has no A/C which is a KILLER in the summetime. Is it possible to have an A/C system installed after-market? How much will this run me? Too much to be worth it? I could always just take the car (2000 Nissan Sentra)