Table:
text: 1968 German Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Jackie Stewart Matra - Ford 14 2:19:03.2 6
Graham Hill Lotus - Ford 14 + 4:03.2 4
Jochen Rindt Brabham - Repco 14 + 4:09.4 3
Jacky Ickx Ferrari 14 + 5:55.2 1
Jack Brabham Brabham - Repco 14 + 6:21.1 15
Pedro Rodríguez BRM 14 + 6:25.0 14
Denny Hulme McLaren - Ford 14 + 6:31.0 11
Piers Courage BRM 14 + 7:56.4 8
Dan Gurney Eagle - Weslake 14 + 8:13.7 10
Hubert Hahne Lola - BMW 14 + 10:11.4 18
Jackie Oliver Lotus - Ford 13 + 1 Lap 13

text: 1968 German Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Kurt Ahrens, Jr. Brabham - Repco 13 + 1 Lap 17
Bruce McLaren McLaren - Ford 13 + 1 Lap 16
Richard Attwood BRM 13 + 1 Lap 20
Chris Amon Ferrari 11 Accident 2
Jean-Pierre Beltoise Matra 8 Accident 12
Jo Siffert Lotus - Ford 6 Ignition 9
Lucien Bianchi Cooper - BRM 6 Fuel Leak 19
John Surtees Honda 3 Ignition 7
Vic Elford Cooper - BRM 0 Accident 5

Question: How many laps did Piers Courage complete when BRM was the constructor and the 1968 German Grand Prix grid was larger than 8?