I patched some rusty floor metal and a few small spot on the outside. It was original paint before I started. It is in spot primer where I massaged the minute dings they all have.
I am not sure what people consider solid for cars that are almost 50 years old, but I have owned more than a few. Prices no doubt are higher in some states than others. I spent the last 47 years in Missouri before moving to Tx a year ago. Mo prices are cheaper tan TX and no doubt Tx is cheaper than many other states. The car the OP has here looks in pics to be a very solid car, but I never claim anything till I DA it down to bare metal. How many pinholes have you found in various parts of the sheetmetal that need that portion replaced? Dings???? I rather repair a few small rusted panels than to try to smooth out too many dents or say have to find better fenders et. Just saying.