A local auto dealership is advertising a pickup truck at a very good price, but of course there is a catch - the truck does not have A/C installed in it. A truck without A/C is pretty useless during the summer in Texas, which explains the dirt-cheap price ($8600 brand new). The dealership had models with A/C installed but wanted $3K more for those. Other than the A/C, the engine / trim / options were identical. The Kelley Blue Book shows that the going price for ordering this truck with A/C as an option adds about $750-$900 to the price. I asked the sales guy, and he said that the dealer couldn't sell me an A/C upgrade, and that any after-market ugprade would void the warranty. He attributed the $3K price difference to "different incentives" being offered by the manufacturer. Of course, I know better than to take a car salesman's words at face value, especially when it's a 25% difference in price. So my question is: Is it possible to retrofit a truck with A/C after the purchase, and would this invalidate the factory warranty for the non-A/C portions of the truck? It would be worth my while if I could do it for about $1K or so. Is this a realistic possibility, or should I forget about this and move on?