Those great pics bring back some memories!!
I see two orange/white Group 7 cars....#58 & #59. Both appear to be McLarens; not Lolas. They look like Mk6's (probably 1968 customer cars) as indicated by the rather 'squared-off' corners of the nose. (I always found the T70 to be very difficult to distinguish from the McLaren, especially the earlier Mk2 from the front 3/4 view.) I don't remember the orange-white livery/color scheme of these cars and who the period drivers might have been.....anyonr else here recall?
Best Regards,
Bob S.