Paul,
Can you see the 20B P-ported, turbo , and super charged being able to put
out 400 HP?

Regards,
Norm Parmley

Are you kidding? Do you mean 400 HP PER rotor? :)
Have you read the web site below? :)

http://www.rotaryeng.net/rb3rot1.jpg

I would not supercharge the engine. For every additional
100 HP you get out of the e-shaft the engine must develop
an extra 30 HP for the supercharger. Read BAD BSFC.

A turbo charger is a like a turbo compound engine recovering
waste HP from the exhaust. About 50% of the HP in a gallon
of gas goes out the exhaust in the form of heat.

Paul Lamar