[wagonman76]

AC unit in April, it was still snowing here. Will you be plowing too? Looks like you might be able to use the plow mount to make the nose a little sleeker. Or if it adds significant frontal below like some do, take it off if you don't need it, then you're not carrying around that extra weight every day. Lots of little things you can do like stuff you mentioned too. I'm sure you could block the grille at least when not towing and you wouldn't notice a temperature rise. My cars have HD radiators and the temp doesn't rise with upper grille blocks.

If you only really need the truck to tow, and have a place for another car, maybe you could pick up a cheap second car for your commute, and it would probably pay for itself with the fuel you would save.