 Complete the following phrase:  It was a non-Grand Prix year at Brands in 1983, but the Marlboro Daily Mail Race of Champions was successfully staged on 10 April, notwithstanding the fact it was only a week before the French Grand Prix and clashed with a tyre test at Paul Ricard. It was also the last non-championship F1 race to be held in the sports history. It was won by the reigning world champion Keke Rosberg in the Williams FW08, who narrowly beat Danny Sullivan in his Tyrrell. Meanwhile, former world champion Alan Jones finished third in his last drive for Arrows. To bring some real excitement, noise and spectacle back into British motor racing, the BRSCC invented Thundersports. The new series had its debut on Easter Monday and the countrys first major sport car race since the mid-1970s was a resounding success. Then, the year turned into a Grand Prix one after all; following the cancellation of the proposed New York Grand Prix, John Webb lobbied FISA in company with the RAC MSA and was granted the opportunity to run the 