[ebfabman]

Hey Don, looks like you got it going pretty good. One thing I did this winter on my daily ruster was made a recirculating cab heater. On the non A/C cabs, the heater takes most of its air from the outside. It comes from the area at the cowl opening out across the lower windshield. Thats not bad except when you're behind some exhaust puffing vehicle then you get chocked out inside the truck. I made my non A/C cab kind of like an A/C cab by welding shut the cowl plenum and removing the vent door on the passenger side kick panel. You could just leave it open and not remove it like I did. Anyway, now the heater fan takes the air from inside the cab through the kick panel vent sends it through the heater core, then back into the cab via the defrost vents in the dash and the heater opening at the firewall/floor. No more smelly exhaust fumes.