Actually they all were run in on a dyno. Moss's car is interesting in that the engine on the data card is not the engine in the car. The 250 engine that was selected must have been installed after the car left the assembly line. Personally, I think they are pretty low on their estimate. Even though the car needs a restoration or refurbishment the Stirling Moss Provenance carries much more weight than say a John Lennon car. With the rise in popularity of F1 in the US I think it will bring much more.