3. DATE CLASSIFICATIONS AND DEFINITIONS
3.1 A car will be dated by the specification of that car and not
necessarily by the date of build.
3.2 Dating periods are as follows:
A) before 1/1/1905.
B) 1/1/1905 to 31/12/1918.
C) 1/1/1919 to 31/12/1930.
D) 1/1/1931 to 31/12/1946.
E) 1/1/1947 to 31/12/1961 (to 31/12/1960 for single-seat and two-
seat racing cars).
F) 1/1/1962 to 31/12/1965 (from 1/1/1961 for single-seat and two-
seat racing cars and up to 31/12/1966 for Formula 2), excluding
Formula 3 and single engine-make Formulae.
GR) 1/1/1966 to 31/12/1971 for single-seat and two-seat Racing cars
(1/1/1964 to 31/12/1970 for Formula 3).
G1) 1/1/1966 to 31/12/1969 for homologated Touring and GT cars.
G2) 1/1/1970 to 31/12/1971 for homologated Touring and GT cars.
HR) 1/1/1972 to 31/12/1976 for single-seat and two-seat Racing
cars (1/1/1971 to 31/12/1976 for Formula 3).
H1) 1/1/1972 to 31/12/1975 for homologated Touring and GT cars.
H2) 1/1/1976 to 31/12/1976 for homologated Touring and GT cars.
IR) 1/1/1977 to 31/12/1982 for single-seat and two-seat Racing cars
(excluding Group C) and 1/1/1977 to 31/12/1985 for 3-litre F1.
I) 1/1/1977 to 31/12/1981 for homologated Touring and GT cars.
IC) 1/1/1982 to 31/12/1990 for Group C and IMSA cars.
JR) 1/1/1983 to 31/12/1990 for single-seat and two-seat Racing cars
(excluding 3 litres F1 cars 1/1/1983 to 31/12/1985).
J1) 1/1/1982 to 31/12/1985 for homologated Touring and GT cars.
J2) 1/1/1986 to 31/12/1990 for homologated Touring and GT cars.
KC) 1/1/1991 to 31/12/1993 for all Group C and IMSA cars.
Z) 1/1/1991 to two years prior to January 1st of the current year for
other cars.