The K0. I'm having trouble getting the call back on picking up the drag bike. The carbs on this beauty are not so pretty on the inside. Thank goodness the fuel ran out rather than in. After an afternoon and evening of kroil, carb cleaner, heat, repeat etc I finally got the float pins out. The oil side sidecover literally crumbled in my hands. HA! Glad I have another set. The airbox came off better but it has a crack. I have repops of all the above and original sidecovers too.