this may not be an apples to apples comparison but i took the 6-pak off my 69 r/t this weekend and put the stock 4bbl intake and carb on. the engine is basically stock and i've had a 6-pak on it for over 20yrs. anyhow, talk about a power loss! on another note here, i used to build a 440 bracket motor for this guy and it started out with a 6-pak. anyhow, all his know it all pals told him he needed a team-g intake and dominator carb. about $1000 later the car didn't run any quicker when it had with the 6-pak on it. multi carb or no carb .