thanks for quick answers well my boat is a mono hull and  i have looked on the web for bigger engines but cant find any. not bigger then those on Rcmart and towerhobbies and such big sites. and to be honest im not a complete noob in this cuz when i bought the boat it had an engine but a very old one and i probably got fooled when i bought it because the water cooling that held down the piston cracked so and i not sure what cc it had but i think around 5-7 cc... if you know any more good good stores please post a LINK and they have to ship to Sweden.  i sound very demanding now... ^^
Im just going to shred water