If you're looking for more air without buying a new unit just space equal distance and drill 5, 1/2" holes in the bottom black plastic section of air cleaner cover. It's an old cheapie hop up trick from back in the day. Of course that ruins resale of the part if you do. but it will give you lots more air. If you don't have a better flowing exhaust than stock I would consider that also. If you're gonna feed it more clean air you want to let more bad air out. could get you 10 % or so more power.