Most if not all the aftermarket A/C units I know of have both heat and A/C. Companies like "Vintage Air" have catalogs and web sites where you can find a unit that is a 'drop in', if there is such a thing, for your ride. Depending on how well you have insulated the cab most units due what they say. The only complaint I've had is defrost. Not because of the heating units but the orginial defrost vents were like an after thought to vehicles as old as ours. If you can open them up some it probely would help.
Last edited by beltfed; 11/29/2011 4:38 AM.
