Thanks for the replies. Looking forward to it!
Dave said he put rear frame rails under it so hopefully that will get the job done. The last duster I had was a Bay Area car with similar quarter panel and roof rust but was solid as a rock underneath….you never know.

We will be hanging out in Illinois for a couple weeks. Hopefully that will give us a chance to iron out any wrinkles ahead of time. We will see just how reliable that old slant six is!!