I think I have my brain around the 993 sprocket, it's the same height as the early cam sprocket assembly when you lose the thick washer.
So I take it that you run just the needed shims?
It doesn't need a key? just presses on?
I need different tools and of course I bought new early sprockets and pins
I have the correct (good condition) 993 sprockets, washers and I believe the bolts are correct, but the bolts seems to have fair bit of play.
I guess I also punch out the rear cam tunnel plugs and buy or make covers?