Both are slide carbs which I consider superior to S&S.
I'm not saying you can't get an S&S to perform well, however other than your shop catering to old-school V-twins, I don't know why you would bother to start with it.
I'll wait for the results.
And for the "patent", is it something like the DaVinci Performance FirePower Carb or Booster Kit...: Davinci Performance
