i bought a 90 square for $250, needs pistons and crank. i've messured out the hulls on the 550and the sj, yes it would require a "few" (ha, ha, alot) hull mods but i think its doable. with all the hacky-moto, mad scientist, superbutchers on this site, i thought you'd appreciate something "new". anyway boredom gets the best of me sometimes, just want to do something different. it would be kind of cool to ride past someone, wide open on a 550 that actually handled decent