So you have spent the last few seasons bead blasting and polising your engine, and then you will install it into your machine. I mean isn't that little engine a work of art? So why not display it to the world? This was the intent of an inventor on Japanese Yahoo, who professed that if there was enough interest he could produce his see through bonnet for other enthusiats!
I am not sure how long the waiting list is at this time, but it gives you a "perspect"ive on the engine that we have never seen before!