interesting read although this covers compound charging using 2 turbo's
http://www.motorsport-developments.c...AF307.tech.pdf but covers how it all works a lot better than my waffle above!
also found a lotus that has the same s/c as mine that uses a 6262 precision billet ball bearing turbo so that atleast gives me a point in the right direction of what can be done and it looks pretty quick too!
http://www.youtube.com/watch?v=DD2XAs-871o &
http://www.youtube.com/watch?v=R1CFqoM7spY