It looks like you're using AM's flat sprockets, is this correct?
If so, how will you get around the fact that the KOP wheel bearings have a 1/2" bore whereas the AM sprockets are designed for the bearings that have a 3/8" bore? You may be able to get away with no bearing on the sprocket, but you may or may not have problems:
http://www.chiefdelphi.com/forums/sh...rocket+bearing