Originally Posted by tech69
now the game plan is to take it to the factory seams by the tail light and upper rear body panel, to the seam on the rocker and the jamb, but cut the new quarter right below the mouldings on the top of the quarter. I could probably open butt weld it where it's cut but no need to try to be superman. I will do it the best way possible that makes it the easiest. Probably run my flanger on the top of the cut on the new quarter and slide it right in.
On the ones I've done I cut the orig at the center of the moulding holes then cut the replacement a tad higher so I had all the trim holes showing then overlapped the panels and lined up the orig holes to the new panels holes and drill screwd it with just enough screws to hold it in place...my new seam was split at the center of the trim holes ,I usually use a lap joint on these long seams for added strength and less warpage while welding...using a butt here would be unpredictable