This thread can be of great help to people. I highly recommend not going crazy as I did on my 71 XR-7…
https://cccforum.discoursehosting.net/t/wow-up-beat-cloth-and-vinyl-100-original-paint-71-xr7/5160/1
I did find when I went to rebuild the rear brakes that they were practically new and only needed wheel cylinders. The engine was turning over, the PO had oiled it up and gotten it rotating. But when I removed the carburetor only to find rust in the intake. It needed to be rebuilt. I went over board with rebuilding nearly every thing.
But being the body, paint and interior still look good and are original.