29Duplicate engine identification numbers—engine substitution

29 Duplicate engine identification numbers—engine substitution (1) This regulation applies if an engine identification number on an engine substituted for the engine of a registered motor vehicle is the same as an engine identification number of another vehicle registered by the Secretary or registered in another jurisdiction. (2) The Secretary may require the registered operator of the vehicle in which the engine has been substituted to cause the duplicated engine identification number to be overstruck and a new engine identification number, specified by the Secretary, to be stamped or displayed on the vehicle in accordance with the standards for registration.