I just won the auction for the other two Fish carbs- one is an original M-2, the other appears to be the Brit version that was manufactured after the Fish company folded. Curiously enough, it seems identical to the "Tec Fish" shown in Strummin67's photo! Strummin- do you have any other views of those carbs? Frank- I'd love to get the tuning instructions- I have the setup info for the Brown version, but the original may differ. I'm thinking it would be interesting to compare them to modern single bbl carbs in a dyno test on a large single-cylinder engine- maybe a motorcycle on a rear wheel dyno?