I working on a restoration of 73 240z.  Although I'm not trying for a concourse restoration I'm trying to keep it as much as possible original looking.  It appears one of the previous owners did most the body work with an axe and a truckload of bondo.  As I work my way around the vehicle repairing and replacing body panels, I do not know how the original panels were assembled.  Currently I'm working on replacing the rear panel below the tail light panel and the rear corner panels that connect quarter panel to the rear panel.  My questions are: does the corner panel mount on top of the rear panel or behind the panel ( see pics).  Second, once the panels are installed is the seam left visible or is filled with body filler and sanded smooth so it appears seamless? 

The seam is visible and many times has some small ripples.  From memory,  rear valance laps over the lower rear quarters

Thanks for the reply.  It's very  helpful

Here is a shot of the right side on my 72. All original, complete with a small pucker where the guy spot welding the panels screwed up. The rear panel sits on top of the side panel.

Just a note on your photo in the first post, if that right rear lower quarter panel is from Tabco then the shape is quite different than what it should be. They never got it right even though they have told so hundreds of times.

 

@Mike