Anyone know if Canadian trucks used different regulators than US units?

My passenger regulator is completely different from the drivers but, from the paint, was in place when the door was factory painted. It does not match the manuals I have seen nor advertised RH regulators on Ebay. The location of the handles are further back than the drivers and match the inner door panel.

The drivers door is the same as I see in manuals. By the black colour it has been replaced at some time.

Check the photos in the photobucket


http://s880.photobucket.com/albums/ac8/46sask/Window%20Regulators/