[speeder]

If it's only a small amount of rust and isolated, I'd have someone good patch it. Cut out the rust and fabricate a piece of new metal in. I've had it done lately on a car and the result was fantastic.

The way that those cars were made, especially that model, you don't want to cut and replace an entire quarter panel unless it's unavoidable. Those are now ~$200k cars in mint restored condition.