Unless the image has been reversed, it's a right hand drive vehicle as well. The GMC badge should be reading wrong if the image was reversed.
Wonder what all in in the front seat area? It looks good now but if the doors were closed, I think you'd see a bit of ugliness in a wide pillar between the door window frames. Probably used front door with little modification. There are no ribs on the rear door jambs, so that's different. You can see vent windows on the rear doors.
