Based on what I've read, the live valve system is pretty integral to the machine, taking electronic measurements and data from many sources. Engine, transmission, accelerator pedal, brakes, inclinometer, and gyro from what I can tell. I'm not saying Honda could never offer an "add-on", but it seems very unlikely due to complexity of the system. If they did offer one, you'd still have (most likely) a exorbitant price tag, and you'd have to really trust the installer because it wold be a major undertaking. One would be better off just trading up. Of course, just sharing my opinion.