[Triple-X08]

your truck has one from the factory, its just internal to the radiator.

but if you need to tow a house, then yeah a aftermarket trans cooler isnt too bad to install, i would mount it in front of the condensor, better air flow. or even remotely installed with an electric fan wouldnt be bad. get a 10-12 inch cooler, preferably from TCI or BCM. you can make your own lines and use AN fittings, or you can go with a stock style hard line, with a normal fitting. either way it wont be too bad, and even wiring in a fan isnt too bad.