i have a 375 YPVS banshee set up for road racing and i need lots of power with a good balance of weight and how well it fits in the frame. any one have any knowledge of good engines or mods to do to my YPVS, i have heard that a stroker kit is the best idea which takes me to 425cc but surely there is a bigger displacement or bigger hp set up to fit the YPVS bottom end?