Too many variables to answer your question. First off it may be 8 hours of work, but it will be many days, because there needs to be time between the restoration steps. The next thing I would need to know is what will be the finished product? Is he just cleaning and removing the rust? Or is he repainting everything to make it look brand new? I would imagine the gold trimmed boxed on the passenger cars them selves would take a long time by itself. Any finally, I'd need to know who is doing the work and what there reputation is... there is a big difference between the $99 Earl Shrive paint special and a paint job from a seasoned artist.
At the end of the day, it really depends on what its worth to you.
