| Antique thru 1949 Except Street Rods | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Street Rod 1920-1948 | A motor vehicle, or a reproduction thereof, with a model year of 1948 or older which has been materially altered or modified by the removal, addition or substitution of essential parts and with a gross weight or registered gross weight of not more than 9,000 pounds. |
| Stock 50’s | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Stock 60’s | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Stock 70’s and 80’s | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Stock 90’s to Present | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Custom/Modified 1950-1979 | A factory-built vehicle that has been modified either to improve its performance, often by altering or replacing the engine and transmission, or it may be a personal design by the builder, making the car look unique and unlike any car that might have been factory built. |
| Custom/Modified 1980-Present | A factory-built vehicle that has been modified either to improve its performance, often by altering or replacing the engine and transmission, or it may be a personal design by the builder, making the car look unique and unlike any car that might have been factory built. |
| Muscle Car | A high-performance automobile, built in the 1960's-1970's. The term generally describes an American 2-door rearwheel drive mid-size with a large, powerful V8 engine and special trim, intended for maximum torque on the street or in drag racing competition. Normally was not built with comfort amenities of their counterparts. |
| Special Interest | A vehicle uniquely distinguishable from the usual, and/or designed for a particular purpose, such as a race car, military vehicle or bus, or built to a specific and unusual theme, either of which would generate interest because of its uniqueness or specialty function. |
| Trucks Stock | A motor vehicle, but not a reproduction thereof, which has been maintained in or restored to a condition which is substantially in conformity with manufacturer specifications and appearance. |
| Trucks Custom | Afactory-built vehicle that has been modified either to improve its performance, often by altering or replacing the engine and transmission, or it may be a personal design by the builder, making the car look unique and unlike any car that might have been factory built. |