Thanks guys for the replies!
This is my third Avanti I own, the other two I used 3300mah 6s and they flew nice. The second one was the one that I was about to convert to turbine, but stalled it and went back to kit form. ;-) Anyway, a friend of mine did the first conversion but used Kolibri T25 (Henrik Torphammar), but yea.. mine is abit over powered, but should hold up as long as I take it easy.
But back to the Xcalibur.. KST or MKS , Ill look them up found some of them atleast here in Sweden.. not too expensive either.
Oh well, Ill search and see what I could find. I´ve got until summer so..
Thanks again!
//K