The roof seam at the c-pillar is very near the top of the pillar. I believe the roof may have been spot welded to the pillar but I know the seams were filled with lead and smoothed. That’s why you can’t find it. Remove the paint near the top and you should be able to see a slight color difference between the sheet metal and the lead. CAUTION: As you may know lead is a toxic heavy metal (no not rock music) so proper precautions must be used when removing it. The biggest NO NO is to never grind lead because of the fine dust created.
Last edited by shader; 09-13-2016 at 06:44 PM.