Kit vehicle: a motor vehicle assembled by a person other than a generally recognized manufacturer of motor vehicles by the use of a glider kit or replica purchased from an authorized manufacturer and accompanied by a manufacturer's statement of origin.
Reconstructed motor vehicle: a vehicle that is altered from its original construction by the addition or substitution of two or more new or used major component parts, excluding motor vehicles made from all new parts, and new multistage manufactured vehicles.
Specially constructed motor vehicle: a motor vehicle which shall not have been originally constructed under a distinctive name, make, model or type by a manufacturer of motor vehicles. The term "specially constructed motor vehicle" includes kit vehicles.
Historic motor vehicle: Any motor vehicle over twenty-five years old which is owned solely as a collector's item and which is used and intended to be used for exhibition and educational purposes.
Street rod: a vehicle older than 1949 or a vehicle manufactured after 1948 to resemble a vehicle manufactured before 1949; and has been altered from the manufacturer's original design or has a body constructed from nonoriginal materials.
Custom vehicle: any motor vehicle that:
(1) Is at least twenty-five years old and of a model year after 1948, or was manufactured to resemble a vehicle twenty-five years old or older and of a model year after 1948; and
(2) Has been altered from the manufacturer's original design, or has an entire body constructed from nonoriginal materials.
Updated 12-14-06
Missouri Emissions Exemptions:
SAN-backed legislation to exempt vehicles manufactured prior to 1996 from emissions inspections was signed into law. Under the new law, motor vehicles manufactured prior to 1996 will only be subject to a gas cap pressure test as part of the state's biennial safety inspection program. In addition, newer motor vehicles which have not been previously titled and registered will be exempted from emissions inspections for the four-year period following their model year of manufacture provided they are driven less than 40,000 miles for the first two years. All motor vehicles driven less than 12,000 miles between biennial safety inspections are also exempt.