In a naturally-aspirated motor, there is so much power to be gained with the proper style header collector, yet people want to run zoomies. I can't ever really figure this one out. If you are running a blower, you are using the blower and the camshaft design to remove exhaust from the exhaust side of the chamber. Which means a zoomie will work just fine.
On a naturally-aspirated motor, the intake side of the combustion chamber starts at the top of a carburetor and ends at the intake valve seat. The exhaust side starts at the exhaust valve seat and ends at the outlet of the exhaust system.
Would any of us try to run an individual-runner intake, with absolutely no plenum, on a street-driven vehicle?
Have you ever seen fuel stand-off over the top of a carb, during a dyno pull? A quick cure is a merge collector.
Why give up the scavenging potential of a header collector? If there was room on a street-driver, a set of 180° headers with merge collectors would be the hot lick. I suppose it could be done on a T, but keeping primary tube lengths to a manageable number could be tricky. It would definitely pick up the vacuum signal at the bottom of the carb boosters, that much is certain. Now that would be someplace where another point or two of jet could be used, because you would be working the carb harder. :spank: