OR you could g RALLY nuts, and use a hydraulic fan a la Grand Cherokee (uses P/S system). While you're running hydro lines, why not tie in your hydro winch? The get Spicer's heavy equipment brake system and be "stylin' tight". It makes a lot of sense to move radiator to the bed (if haulng's out of your trucks future), and what you can do from there is almost limitless. Move your coolant reservour there make room in engine bay, improve weight bias). If you go with 'lectric fans, may as well move the battery (ies) back there, too. Once you cross that line of relocating, there's a host of other "stuff" to follow.