Well they discontinued the 38 sprocket I ordered, so I ended up going with 16/40 instead. But I also need to do some other things to the bike before I took it back to make safer to ride. It needed front wheel bearings terribly bad and the front a arm bushings were shot. So I've got it down to the frame right now. I decided to go ahead and take some weight out of the frame, ditch the front brakes, picking some spindle mount wheels up from John @ sand toyz, +8 swing arm, and I'm currently trying to purchase a set of GRR sbsf oof's from a guy on AtvDragRacers. So we'll see how it runs this go around.