Thoughts on this car for a project with my pops

Welcome to FABO from SoCal!
One thing I found interesting from your pics is the chrome trim over the top of the car just at the front of the C-pillar and the apparent difference in paint condition of both sides of the trim. It makes me wonder if maybe this car had a partial vinyl top at one time.

1966 Plymouth Barracuda - Exclusive Photos - Mopar Muscle Magazine

This might be a consideration if you're planning a 'factory resto' vs. a 'restomod'. I don't know how many were built with a partial vinyl top but others may know and chime in.
Good luck with your project(s) no matter what you decide.