As that goes...when I was doing the body work on the 1970 (like 17 years ago) there were no reproduced sheet metal parts. You had to try find good used, or make your own panels. Most used parts all had the same repair need issues. I learned to fabricate and weld...probably over 50 repairs big and small...but all panels are the original ones. You are correct, now, you can pretty much buy all the sheet metal pieces and start from scratch. Not cheap or easy...but available.