Ted,
Orange Empire had to reside the car after it was received; but, other than that, IIRC, no other work was done to the car.
The previous owner had removed the siding on one side of the car. At the time it was described as "a West Side car without its south side."
Before the car was allowed inside the Grizzly Flats display building the Board required that the car be resided. That was done and the car has been inside since. Turned out that the siding on the car was shiplap style and a size that was commercially available.
Brian Norden