Absolutely NO Model T evidence on this truck. Dealers, besides selling Ford cars and trucks, and all kinds of accessories for same, also sold Ford Chassis. For the most part this consisted of a full operating chassis and all body parts forward of the windshield, i.e.: front fenders, hood, radiator and shell, etc.
The purchaser, usually specialty body companies (ie. school busses, taxis, deliveries, etc., etc.) custom built every thing else behind the gas tank/cowl area. So there were an infinite variety of various kinds of 'specialty' bodies made. Your friend has one.