I plan to use a spray on bedliner type finish on panels exposed to the road grime. On say the F panels, any issue with finishing the outside of the panel before installing? I was thinking that maybe I need to rivet against the metal first, then tape off and finish the panel to avoid any issues with the layer of bedliner between the rivet and the metal panel. However, I suspect I'm overthinking it, and I also think I've seen panels installed after finishing.

Thanks,
Ben