First from what I have read DeTomaso may have not built the cars in order. Pushing a body aside waiting for a part or a customer payment. Second the German were euro or RHD cars had some unique features like the roof antenna , the side e-brake. The two arm bel housings were for the US smog cars. Motors from the days I was at FoMoCo would have been ordered by thru a Canadian assembly plant handled by Parts Département Shipped from Windsor plant to the customer. As Steve has posted pics higher some of the valve covers were silver for some strange reason. Also the water pump pulley was not a Ford part it is a billet piece and you note has sharp edges. Roland has said they would get 5-6 cars at a time and many cars were incomplete when received.
Also Lee my car does not have or appear to ever have had heater valves. Another note the late model heater as in Wayne’s car has a lever by the driver’s knee. It should be black plastic not chromed.