Group C 1982 WEC series:-
1. Autodromo Nazionale Monza 18 April
2 United Kingdom The Pace Petroleum 6 Hours Silverstone Circuit 16 May
3 Germany Rudolf Caracciola Wanderpreis 1000 Kilometres Nürburgring 30 May
4 France 24 Hours of Le Mans Circuit de la Sarthe 19 June/20 June
5 Belgium Trophee Diners Club 1000 Kilometres Circuit de Spa-Francorchamps 5 September
6 Italy Trofeo Banca Toscana 1000 Kilometres† Mugello Circuit 19 September
7 Japan WEC in Japan (6 Hours)† Fuji Speedway 3 October
8 United Kingdom Shell Oils 1000 Kilometres† Brands Hatch
So I guess any of them will do for starters for lap times but otherwise the tracks I suggested a few posts earlier for variety. I don't even know if Grp c is say practical at Adelaide