If you would make the supercharger logical, atleast make it look right, then it's 5 stars.
Remove it from the valve cover, and add it to the intake. The pipes on the supercharger mounting spot goes where the pipes from the carburetor goes. (Picture below)
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https://s-media-cache-ak0.pinimg.com/originals/a3/e6/d3/a3e6d3b6aba12b60741bde0cd191130d.jpg )
Twin screw supercharger on a inline engine^^
That one is for injection engines, but the Satsuma uses a carburetor.
You have 2 choices here:
1. Add a carburetor on top of the supercharger, and have the rest like the picture above. What i mean with the carburetor:
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https://whipplesuperchargers.com/images/detailed/0/W305_carb_web_2.jpg )
2. Make it kinda like injection. Like where you have it like the picture, but with a screw on it or something like that so it looks like injection, but you can still adjust it.
So remove it from the valve cover, make a new carburetor model instead, with option 1 (recommended) or 2, please.
And make some supports for the whole thing so it just doesn't float there.