Table:
text: 1986 100 Miles of Norisring
Official results
Official results
Class_ Team Driver Chassis_Engine Laps
C1 Blaupunkt Joest Racing Klaus Ludwig Porsche 956 B 79
C1 Silk Cut Jaguar Eddie Cheever Jaguar XJR-6 79
C1 Silk Cut Jaguar Derek Warwick Jaguar XJR-6 79
C1 Team Memorex ( Brun ) Frank Jelinski Porsche 962 C 78
C1 SAT Porsche Kremer Team James Weaver Porsche 962 C 78
C1 Brun Motorsport Walter Brun Porsche 962 C 78
C1 Hans Obermaier Jürgen Lässig Porsche 956 77
C1 Sachs Joest Racing John Winter Porsche 956 76
GTP Blaupunkt Joest Racing Danny Ongais Porsche 962 76
C1 Brun Motorsport Thierry Boutsen Porsche 956 76

Question: Which chassis engine did 77 laps at the 100 miles of the Norisring in 1986?