The Super Kaos is, in essence, a redesigned Kaos for use with retracts. It will be a tight fit getting nose retract gear in the Kaos.
A Hayes Slimline tank will help give you more room:
http://www3.towerhobbies.com/cgi-bin...?&I=LXK835&P=7
These tanks date back to the days of long slender fuselages.
David