Here's the leading car, Porsche Number 25, in for its first pit stop for fuel and possible driver change.
8 seconds sound clip from the Le Mans (1971) movie soundboard.
You can hear this line at 00:35:53 in the Blu-ray version of the movie.
Quote context
[...]
- Over three minutes have passed. We may expect the cars through the chicane any moment now.
- Will it be Porsche or Ferrari in the lead?
- And watch out for the red Lola. Lola.
- And here comes 20 back on the track.
- Gulf Porsche Number 21, driven by Johann Ritter, entering the pit.
[...]