As Steve stated, a number is stamped in the engine compartment, right near where the big bunch of wires go through the firewall. This number was believed to have been stamped by Thompson Pressed Steel Works. My Heritage Trust document does not have this number listed and I believe that it was not recorded anywhere (according to Horler anyway). The traceable numbers are the Car/Chassis # (on the tag located on top of left frame rail), engine # (top of the block at the front), and the Body # (right side door jamb tag BAE/#####). Good luck Edd! Scott in CA