I recently purchased a 99 900ss it has 23k miles on it and it was not taken car of very well. I got her all cleaned up and now for the engine while it is snowing. Does anyone know if the cylinders have a coating on the sleeves or can they just be bored out? secondly what are the pro's and cons to the 944 and the 966 piston kits. The bike has arrow exhaust and Barnett clutch, basket, pressure plate as far as any upgrades. It will be getting ported and a power commander for the tuning after engine upgrade. any advice would be greatly appreciated.