[wilkin250r]

Ditto and ditto. Something like a Vintage Air is likely to cost at least twice as much, AND require ten times the work to install with custom mounts, controls, ducting, ect ect. And that 2x price tag is for a simple, basic unit with limited outputs and options. If you want a more versatile unit, you're looking at 4x the cost.

Or you can pull a unit specifically designed to work with your truck, requiring minimal work to install, and easily the cheapest option.