what kinda carbs are they? what are the mains and dumps drilled to? if they are drilled at all... what pilot and what needle?
gonna need a high flow petcock gut the gas cap and drill the vent hole in the cap as big as you can and still be able to hook the vent hose to it... do the carbs use a fuel pump or are they gravity fed? how far are you racing? gotta go one step colder on the plugs, gap them to .018 wheres your timing at? compression?
answer these questions and we will move on... also start doing some reading on tuning alky.. take everything you know about tuning gas and forget it! completely different on alky....