Re keying could be a problem. My 230 SL has the key cylinder held into the unit with 3 pins that are pressed in flush with the lock body. The pins are hardened steel and very small. I tried to drill them out on an old lock, no way. They are about 1/4" long and have spiral cut groves in them to hold them in. Looks like once they are pressed in they don't ever come out. I don't think you can rekey without getting the lock cylinder out of the lock body.