Todd is your number the same???. Shane I built a different version of the VZM using the OS speed internals and rod. The crank, rod and sleeve are different than the normal VZ line. Crank, piston/sleeve and rod are all a balanced set. I'm hoping to get out and let her rip next week. Ive run the VZB and the Speed VZB and the Speed version is a better engine. Case remains the same though.