Some of the things that need to be repaired are the floor pans. The previous owner cut out a large hole in the front driver's side floor pan (1st pic), pop rivetted in tin, and the underbody tarred over it

.
In the other floor pans (2nd pic)they tarred aluminum foil over the larger holes and just tarred over the smaller ones. There is pop rivetted tin in the inner rockers as well, and a lot of bondo in the outer rockers and for reasons I have yet to determine the driver's side quarter panel.
Both the wind shield and rear glass (3rd pic) opennings need some work as well.
On the plus side, that seems to be pretty much the extent of the "major" repairs. So it is not a bad starting point. The mods will be more work than the repairs will be.
David