from what i know about coolers, there are two types, the regular kind that looks like a radiator, that you put in front of your actual radiator. this can be installed in an afternoon, and are pretty cheap.
another kind is one with an electric fan attached to it, so it can be mounted anywhere, thsi is the type i'll put on my van, as there is very little work room. but in a truck the basic kind will work fine. go to an advance auto parts store and they will set you up.
"Your Lawn is Unique, Your Lawn Care Provider Should Be Too"
2005 GMC sierra 2500 4x4
2000 Chevy Astro 4.3l vortec V6
2006 Simplicity Broadmoor
2005 Lawn Boy 21" walk behind
2006 Craftsman 21" 6.0 HP push
2005 tow behind spreader, dethatcher, aerator
2006 5X8 trailer
2005 Echo gt-200R
a slew of hand tools
The list goes on
Rome wasn't built in a day, but they didn't have me working on that project