Installed a new heater box, heater core, blower motor, and all the duct work in the commando today. All of this is out of a 70 ford torino. VERY hard to find in useable shape, but thanx to Ebay I found it all in near perfect condition for cheap. Why a torino box you ask? Its easier to find than the oe stuff, its very small, has very simple access for ductwork, and it is cable actuated like the original jeep equipment. And its what was already in it lol. Dad installed one back in 80. The old one was rusted out from a leaking heater core, the blower motor was locked up and all the duct work was MIA. I know this isn't an actual "mod", but I kinda needed heat lol