40 pictures with ideas on how to add a rear tailgate window
This 36 has an upper curved crossmember and tailgate but the cross member has been cut in half with a piano hinge. An original 36 has the cross member in one piece and no upper tailgate.
Notice how the upper wooden cross member in the back is missing like on the 36. Piano hinge is attached directly to the top frame
A view from the inside on a 40.