I've turned with all cars of each group. These times are done with 100 litres or with full tank for the Elan and the 914, that got a smaller tank... Approximately 10 laps for each one:
[VDA] Manteos 1:46.552 18/07/2009 Gr6-2 Porsche 906 Carrera 6 (20 ltrs
)
[VDA] Manteos 1:48.787 18/07/2009 Gr6-2 Porsche 906 Carrera 6 (100 ltrs...)
[VDA] Manteos 1:48.993 18/07/2009 Gr6-2 Porsche 906 Carrera 6 Langheck (Could be a 48.7)
[VDA] Manteos 1:49.273 18/07/2009 Gr6+2 Ford GT40 MK II (48 was so near...)
[VDA] Manteos 1:49.980 18/07/2009 IROC Porsche 911 RSR IROC
[VDA] Manteos 1:50.461 18/07/2009 Gr3+2L Ferrari 275 GTB/C Speciale
[VDA] Manteos 1:50.510 18/07/2009 TC70 Porsche 914/6 GT
[VDA] Manteos 1:51.765 18/07/2009 Gr3-2L Lotus Elan 26R (after 40 laps)
[VDA] Manteos 1:52.243 18/07/2009 Gr4 Shelby Cobra 427 Roadster (difficult to set)
[VDA] Manteos 1:52.706 17/07/2009 Gr3+2L Chevrolet Corvette C2 L88 Coupe (That's surely beatable at least of 1 sec)
[VDA] Manteos 1:56.933 17/07/2009 Gr3+2L Shelby Cobra 289 Roadster (I gave up after 2 laps... very difficult to drive...)