I have an SPE40 that runs like a scalded dog with the cowling off but with the cowling on, there is not enough air for the carb as it is too close to the cowling. I know I can just grind a nice hole in the cowling but it might look better with a velocity stack. I can go the home made route with brass tubing, if I can get it that big, and thread a plate on the carb so the stack can be installed after the cowling. can someone come up with a better idea?