Have a Mopar Deluxe Model 36 Heater in a '49 B-1-D 126. Interested in how any venting or heater ducting would have been routed through the interior? All of the interior heater ducting was rotten beyond recognition when we pulled out the truck, so I don't have any reference. How much ducting ran under the dash and where did it go? Thanks for any help. Also if anyone has a schematic drawing of the heater parts, I'm looking for photos of any of the duct routing pieces, all we have is the heater box (though it works and is in great shape!)