This is getting interesting. On a whim, I called Generac and tracked down their Warranty Manager. He did not know about Power-trac but commented that that meant nothing. He said this engine has 33 HP and is the same engine that Orange County Choppers uses for some of their custom motorcycles on cable. His only concern for warranty purposes is whether they had tested the design for sufficient air flow purposes, but looking at the pics of the 425 he did not think that was a problem. However, he had never had anyone ask whether a one up model would be covered under their standard warranty and is taking it up the ladder to find out. He said that if you look at the power curve, its peak HP is 38.
So, I could chop this 425, add extended forks, custom paint, and sell it for over $100,000 like they do on their choppers?