I reglassed the old repairs.
The Fiberglass repairs can be a challenge and take a lot of work. This car was still in its all original lacquer painted fiberglass. This is a real pain to strip. I use soaked rags with slow Lacquer thinner or Acetone. This will strip the glass to the original gray primer; it just takes a while and patience. I have heard of guys using soda blasting, but I will stick to what works for me. The car was mostly original paint with the exception of a repair on the left rear end cap and quarter panel with a blend into the left driver's door sometime in the past. Done in lacquer. the repair was done poorly and they used the wrong resin. On Shelby glass I use a high temp resistant vinyl resin. If you don't want shrinkage (as George would say) later after the car is painted or distortion on a hot day, this should be used in all glass repair. You can't buy this resin at the local auto paint store. The inner fenders when the car left for the dealer had no undercoating. This I carefully remove. I restore back to the bare glass as it was done. Care must be taken not to ruin the Shelby part numbers molded into the inner fenders.