Aerochargers
I thought this company went out of business, but I guess it came back or something. These things are pretty cool, so I thought I would share what I came across. Check it out ceramic, ball bearing, Variable Vane Turbine, and they don't need oil lines run to them. So they can be mounted in ANY position
https://aerocharger.com/shop/index.php/aerochargers.html
Downsides are they are I think pneumatic and there aren't that many turbos and of course the price
https://aerocharger.com/shop/index.php/aerochargers.html
Downsides are they are I think pneumatic and there aren't that many turbos and of course the price