The Sauber C9 didn't race at Le Mans in 1988 because they couldn't keep tyres on the cars throughout the Practice sessions. The cars definitely raced at Sandown in that year (The Lucas Supersprint) & nothing, not even the TWR-run Jaguars could keep up with them. The race was televised on SBS & I had the race on VHS for years. As for the 1984 race, it was run in between the '84 ATCC Round & the Castrol 500 of that year which was the first touring car race on the extended 3.9km layout. The1988 Enzed 500 was the last major race meeting to run the infield layout. @LumpiestFish you are correct. The old (original) 3.1km Sandown circuit wasn't long enough to qualify for a W.E.C event. On top of this, the original pitlane was never going to be deemed safe, adequate or suitable on any grounds for an FIA sanctioned event. Former members of the Light Car Club, for years promotors of motorsport at Sandown, roll their eyes & groan when recalling the Group C Sportscar events because those two events, together with the cost of the circuit infield extension, is what sent the LCC broke. Jon Davison, Uncle to Alex & Will Davison, then took over as Promotor of racing at Sandown.