$15 shipped, malossi E12 air filter
$115 shipped, dellorto PHBG 21mm DS black race carburetor
Used for a season, has the 2 stroke internals, can outfit it with almost any jet setup you need, plus one extra + jet and one extra - down!
$40 shipped, MLM Minarelli V1 21mm Intake
It was white, I powdered it black, looks sweet! #14 in bottom pic