Carb Help for a 307

Hey yall I was just wondering what is the carb called when it looks like a miniblower cumin out the hood im jus lookin for one for a 307 it probly dont need all that air but it would be fun to put it on it looks like one of those 3 cylinder blowers or the massive single quad blowers but i jus lookin for the single single barrel blower where can i find this and wut is its real name... THANK YOU FOR REPLYIN i might get a lil annoyin but this is how i learn and i like other peoplez oppions:icon16::smokin::rofl::evillol: