Hi all, I need pics of the heater system for a 69 CJ5. This all started with me needing to replace the heater core, and the one I have does not really look like the one in parts catalogs... I don't think I have a defrost tube and mine is literally a box on the heater core with a fan attached to it. (the box has some vents cut out on it.) Any pics of how the original setup is supposed to be, or an easy aftermarket solution would be much appreciated. I did find some threads on this topic but the picture links were broken. Thanks!