RTD:
CMPRO is the manufacturer of the kit and Creek/GSP sell the kit here in the US, and protek and some other companies sell it overseas.
Here is a link to a thread that talks about the setting up the katana. I put pictures of my pull-pull setup there. If you are using a glow engine, and mount the servos in the tail you will probably have to add about a pound of weight up front to make it balance correctly. But if you relocate the servos close to the CG you will not have to add any weight at all.
As far as power goes the OS 1.60 in mine gives this plane all the power you need and then some.
for servos I used 605 BBs all around and they work fine.
Stephen
Katana Thread]