[vector1]

i would fix the air filter problem first since it would be the cheapest and see if that makes you happy, then go from there. take off the choke horn or restriction and get the a/f where it should be, drive it on the street and see if that is enough, then go from there.

on the dyno it seems the filter tops don't help the hp much, carbs don't seem to like the air coming into the top from what i have read, but it might help your situation.

if you get the a/f ratio where you want it, changing carb, exhaust, etc., is not going to help much imo, too many restrictions--heads, cam, compression, stroke.

get the a/f correct and enjoy. lot of guys with bigger problems would trade you.