makes sence. i put them on for nostalgia looks on my 32 austin. to run in nostalgia races.
That is usually the logic for running a zoomie set up on a gasoline carb engine.
Sorry if you did not know that would likely be the net of the use of them. You most likely have a very happy engine once you check all the usual carb adjustments to be sure they are correct with any other exhaust system but the one you have.
Bruce
last year i ran headers , just wanted to change the look. maybe i'll use the headers when i run weekly, then use zoomies for the nostalgia races and just pust up with a little black smoke.