I happened across your videos on Youtube before seeing you post them here, it looks like a fun project.
Interestingly, there were a series of videos from a different fellow a couple years ago about another 1960 Pontiac barn find - this is the first one on his car:
https://www.youtube.com/watch?v=lgoyvqjgoZY Unfortunately he didn't organize them in a playlist so you have to sort through his whole list of videos to find the Pontiac ones.