All I would say is that closer examination would be recommended!
Definitely! Remember cars of this age will not have been Cuprisol dipped, will have mild steel wings and inner wing valances, and will have been sprayed wings-on. Rust protection from the factory was practically non-existent when these cars were built.
So unless it's already had a wings-off restoration, or it's never seen rain, I would expect to have to replace a lot of bodywork.
Easiest way to check if it's bad - get underneath it and look under rear of the front wings where they fix to the inner wing valances. This is the favourite spot for the valances to rust and if water has got between bulkhead and valance the bulkhead will have rusted through too.
A car like this can look very nice on the outside but be hiding a multitude of sins.
