While you are doing that kind of metal work, here are some changes I found worth while.
1. Move the license plate frame up so the license plate fits:
2. I altered the decklid latch to use a standard latch found in every automotive hot rod vendor. With a regular pin there is no side to side movement of the deck lid:
3. I also welded over the rear button and actuated it with a bearclaw latch:
Put a cover over it to clean it up. It has since been painted: