Supercharged 6
That is a tiny blower, much more elegant than the Roots-type superchargers I have seen in photos of slants. Wonder where they sourced it. I have pondered if the belt-driven blower from an early 2000 Mercedes Kompressor model might work. Engine displacements are similar and I have seen used/rebuilt ones fairly affordable on ebay. The other idea is that electric-motor driven compressors are becoming more affordable and pose less a packaging issue.