Bill make sure your problem is related to a propane problem if you buy the kit you will have to do some conversion to make it fit the old zenith went into the thermostat housing the you will have to make water lines to hook to the emco from the engine block also you will have to mount the emco converter to the frame of the truck also make sure it will fit to your manifold measure bolt to bolt on the old carb to the new carb you could call centuryfuel in Chicago and give them the model and serial number or Nash fuel they should be listed on the web they both should sell conversion kits for this old Clark if you need help don't hesitate to get back to me.