Thanks for the information about those motors. My dad raced C-Service. Probably too slow for Doc. I have a recollection of a machine shop in Phoenix that made parts for those engines. And I remember the name Hubble came up a lot. But we made a lot of trips to LA and raced in San Diego. So, I might be confused there. Remember traveling with Doc to LA in his red Chrysler 300F. We were pulling two hydroplanes stacked on on a trailor. That was some car. And it went really fast. Think the meeting was about the impending world record attempt. Met up with my dad (JP) in San Diego later. Great information about great times. BTW: Doc and JP had a friend named Rocky Stone, from Oregon. Think he raced runabouts.