| Class A |
Stock 1900-1955 |
| Class B |
Stock 1956-1965 |
| Class C |
Stock 1966-1975 |
| Class D |
Stock 1976-Present |
| Class E |
Home Built-Kit Car {Home Built- meaning own design} |
| Class F |
Foreign Pre ‘80 |
| Class G |
Foreign ’81-Present |
| Class H |
Pony Car [Early] Pre ‘80 |
| Class I |
Pony Car [Late] ’81-Present |
| Class J |
Stock Factory Muscle [Nostalgia] To ‘70 |
| Class K |
Stock Factory Muscle ‘71-‘86 |
| Class L |
Stock Factory Muscle ’87-Present |
| Class M |
Street Rod Steel Pre-‘37 |
| Class N |
Street Rod Glass Pre-‘37 |
| Class O |
Street Rod All [Glass& Steel] ’38-‘48 |
| Class P |
Modified Street ‘49-‘60 |
| Class Q |
Modified Street ‘61- ‘76 |
| Class R |
Modified Street ’77- Present |
| Class S |
Trucks Stock 2WD & 4WD Pre-‘74 |
| Class T |
Trucks Stock 2WD & 4WD ‘74- Present |
| Class U |
Mini Trucks |
| Class V |
Trucks Modified Pre- ‘74 |
| Class W |
Trucks Modified 2WD‘74-Present |
| Class X |
Trucks Modified 4WD ’74-Present |
| Class Y |
Kustoms [Mild] |
| Class Z |
Kustoms [Radical] |
| Class AA |
Sport Compact |
| Class BB |
‘Vette ’53-‘73 |
| Class CC |
‘Vette ’74-Present |
| Class DD |
T-Bird All |