I recently finished rebuilding a 1994 kx500 that was a Craigslist purchase. Went to register it at the DMV and found out it doesn't have a engine number on the top by the kick start lever. I have been scouring old posts online for info. Not sure if there is a way to tell the original number, it is not on the title. Chp said they may have to confiscate the motor, even though I just finished rebuilding it with a new Cylinder and Pistons. Any help would be appreciated.