Quote:

The seam between the end cap and the rear valance didn't have seam sealer, it was left open





Agreed, but it's also one of the reasons all 2nd gen Charger rear valances blow out from rust, it's best to seam seal the corners in IMHO, and seal them up from hidden moisture/rust forming...these cars where built haphazzard from the factory, unless the OP is going for the Gold, i see no reason to not improve upon the factory's errors or misgivings in a restoration

mike