The McLaren M7B, an experimental version of the car with unique low-slung pannier fuel tanks, was then obtained along with a Cosworth DFV engine to replace the rather slow Cooper, which was sold to Swiss car collector Walter Grell. Elford drove the McLaren in a further four Grand Prix that year, finishing tenth at Zandvoort and finishing the next two races in the points with fifth at Clermont Ferrand and sixth at Silverstone. The German Grand Prix was the team's last F1 race that year, as Elford crashed out and wrote off the chassis.