Kike,
I have to agree with everyone else. The Kaos is a great flying bird (even though the covering leaves something to be desired.[:'(]) I had a YS53 four stroke in mine and it flew awesome. I've also flown my brothers Tower Kaos with an OS 50SX and it really hauled a___. A piped 46 on one should be a blast!!!!!!!!!!

Go for it.
David