Dealer convinced me I should upgrade the timing sprocket so I bought the kit. Installing it seems a bit iffy since I don't have any special S&S tools for holding sprockets for loosening the fitting bolts. I asked a local bike shop about doing cam drive work on an S&S engine. He said sure, but he doesn't use special tools. He uses a rattle gun. Hmm. I have an air impact wrench. Maybe I'll try his method. Nothing like good old brute force, eh?