So we've had a "Twister" as the LOOTM before, but not a Knight Twister. This baby biplane has its roots in the 1930's, but the high performance and economy to build/operate are as timely and modern as can be.
Steen Aero Lab is the official place to start your education. Then there's Wiki, and all the other standard Internet sources. But to whet your appetite for more info, how about a few choice performance specs (for the Knight "Imperial)"?
The LOOTM for September 2011
The Knight Twister