i am wondering, what engines would fit in a 250x with minor modification, as in no cutting or welding to the frame! also, i'm only interested in which 2- stroke engines will fit, i don't want a four stroke engine. i know there will have to be fabrication to the motor mounts, etc, but i'm looking for an engine i won't have to do any fabrication to the frame rails to put in?? all help is greatly appreciated!! also, i need this info soon, thanks!!