I have the opposite problem, everytime I bring my racecar to C.A.R for repair, I worried if lurch will open the pandora box
don't do a full restoration if you want to track or hill climb the car. (just my opinion)
This is what I was thinking repair the known rust issues, remove the vinyl roof and dents, Make it look good and get out and have fun with it. I also recognise that there is hidden rust in an unrestored Z and if the project.
If the rust is just bubbles, don't do anything. Just put it back together and use the Z.
As soon as you start investigating the rust issues, you'll open Pandora's Box.