So looking at engines to potentially race in the motolite class and i'd like to run a 2 valve 230cc four stroke engine. Currently the main options are an XR 200 and bore it out or an XT/AG 200-225 engine. Neither of these options are proving very easy to come by so ive got a couple of questions for all you more experienced engine guys - 1/ Could you reduce the capacity of a 250cc single easily enough to get it to 230? Or is the cost going to be much the same as trying to get either of my top two engines working? or 2/ Are there other bikes out there that would fit the bill that i dont know about and you can enlighten me? Cheers!