I went to my lhs today and they had an O.S. .15CV-X with the 10-E carb for $115! Naturally I bought it. Now comes the question. I have a .15CV-RX in my Rusty now, but I hate to say, it's almost too much. I know this subject has been beaten to death, but I'm thinking 2-speed on the CV-X in the Rusty. Since it already has the long crank(I haven't cut it yet) is it possible to use a 2-speed cb from another car? If that can be done, all I have to do is make the 2 spur gears work. If I can find one with say 18/72 first gear and 22/66 second gear, this should fly! BTW, the CV-RX will go in my pro-.15 Maxx. The Maxx needs the torque because it's heavier. Any ideas or input would be appreciated.