Going to the 944 is a very common upgrade for the SS. You usually also go with 11:1 compression pistons at the same time which helps a lot too. BCM in New Hampshire is the best I found (www.bcmducati.com) but lots of others avaiable. Cost was $800. It really also makes sense to go with 41mm FCR carbs at the same time rather than waste the time setting up your stockers. About $750 I think. Huge difference. I did my 944 about five years ago. About 15K miles on it. Simple install especially if you've got the engine out already. No reliability problems at all. Clutch is still stock. I really use mine more like a sports tourer rather than a club racer so that'll have an effect on reliability for sure. I dyno'd my setup at 88 HP and 70 ft lbs of torque but that was with some porting work too. If you went with individual 41 FCR carbs on malossi manifols, you can get to 92HP+