I'd love to see some performance numbers as it definitely looks like it has the potential. My concerns would be the rods and crank as the stock S350's are on par with that of the 320 motors. Still forged but the E37 motor uses an offset crank and with those numbers, would probably be the weakest link. Supercharger definitly helps as it's a higher liter SC than ours so it doesn't need to be spun past it's efficiency range for more boost and as a result, creates less heat.

This was something I was looking into doing until I found out about the offset crank and then decided it wasn't worth the risk to pour that kind of money into something that might not have any longevity.

Thank for sharing