maybe.. maybe not. I personally feel that thet the gains from spacers are minimal if any. They should only be used to clear the clutch actuator... I was just stating the theory behind spacing the carb away from the reed cage.
When I used a spacer I put it between the carbs and reeds.
There was a guy awhile back that did some dyno work with spacers... but.. i'm not searchin for it.. lol