 Complete the following phrase:  Hesketh rented a Surtees TS9 for the non-championship Race of Champions at Brands Hatch, with Hunt finishing third. This success led to the purchase of a March 731, with Hesketh also signing junior March Engineering designer Harvey Postlethwaite to modify the chassis, working from Heskeths Easton Neston estate. The car made its first appearance at the 