So i bought a Raptor 660 and when i tore the engine apart i found all sorts of things wrong. The previous owner had a Stage 2 Hot Cam in it but didnt redo the valves so they wouldnt ping the piston. so needs new valves and new piston. also they didnt put the Tranny together correctly so the transmission shreaded itself some. and the crankcases are not flush from ppl prying it apart with a flathead screwdriver. so anyways i found a guy that has a 98 ZX6R that he was parting out. everything but cosmetic stuff is there. he said $250 for it all.The engine runs fine from what he says. We will find out soon. But my question is..I havent found anywhere on the internet where someone put a Ninja engine in a Raptor. Im trying to get a lil insight before i jump on this bandwagon. Anyone heard of anyone using a Ninja engine or what mods are necessary to fit the engine in the frame? or if it will even work correctly in the frame?