Carburetor calibration/specs

Ed-

Thanks for that reply. Since we are talking carbs and calibrations/specs, I have this question--you say it is best to ensure the carb is used in the correct application, then also ensure that it is rebuilt and setup for the correct application. Short of differing venturi sizes (1.08 vs 1.12--small block vs big block) and different jet sizes, what else is changeable with the carbs? Can the boosters be any different between carbs? What/who decides what particular specification goes on what particular carb?
Here are the settings i can think of:

float level
jets
choke cap settings

what difference in settings are there between auto trans and manual trans? and why?

Howard