Class C : Touring Cars 2501-4000cc - a class intended for six cylinder Ford Falcon and Holden Commodore saw an influx of naturally aspirated sports cars, Honda NSX and Porsche 968 which were expected to be outright threats.
Class D
Class D : Touring Cars Over 4000cc - featured V8 powered Ford Falcon and Holden Commodore with the production car version of the Holden touring car expected to be fastest.
^ abcdSteve Normoyle, Battle of the Supercars, The History of the Bathurst 12 Hour - 1991-2017, pages 20 to 24
^ abcdefgJames Hardie 12 Hour, Motor, June 1993, page 106
^ abEntry List - James Hardie 12 Hour, Auto Action, 2 April 1993
^Peter McKay, Mazda takes 12-Hour as Porsches outed, Sydney Morning Herald, Monday, April 12, 1993
^ abcNormoyle, Steve (1993). "Australian Motor Racing Year 1993/94". Australian Motor Racing Yearbook. 23. Chevron Publishing Group: 226–234 & 300. ISSN0158-4138.