Actually that is a top secret design scavanger setup - good for an extra 15hp.
The breather that I was sent was a tad to wide to fit behind the shroud ( I got someone else's by mistake) so that is why it's up there. Actually I kinda like the way it looks up there - I'm notching out my deck lid today - shoud looks pretty sweet popping outta it.
Engine's gotta breath right!