During and after official qualifying, we were shocked to the core as four of GT cars did not qualify and our Porsche 911S was one of them. Apparently the Ferrari 512 and Porsche 917 cars raised the average lap times so much, that the gap widened too much for some of the slower GT cars. The 107% rule applied that the slower GT cars had to make up a percentage of the fastest times and we could not achieve this and therefore failed to qualify.
There were no chicanes in the Mulsanne straight in those days. The Porsche 917 set the fastest speed at Le Mans that year and this car still holds that record even today.
We were all desperately disappointed, so it was decided to stay over for the race weekend to watch the race as spectators as some form of consolation.