Do you ever intend to use the truck like it was intended to be used, or is it a Cowboy Cadillac that will never see any real loads? High engine speeds in the lower gears with a heavy load and low road speed will generate more heat than any electric fan can blow away. If it's never going to do real truck things, go ahead and go electric.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!