The place that Graveyards Cars uses is Instrument Specialties which is owned by Mike Mancini who also owns American Muscle Car Restorations. I personally have not had any work done by either place but I have been at MCACN and been able to look at cars that they have restored, he has had cars on lifts so you can get up close quite impressive. I would consider
American Muscle Car Restorations to be one of the top restoration shops. Call them and find out how long it would take to restore your dash cluster.