How about one from 1975 My Dad's GTX which he ran in Heavy Elim (HE)
The other money classes were Super Pro (8 fastest 10:99 or faster cars) Pro Elim was (11:00 to 11:99) then Heavy Elim (12:00 to 12:99) the Street Elim (13:00 to 14:00) were the money classes then the trophy classes were A bracket to H bracket (1/2 secomd intervals starting at 13:00 and slower).
