for future March F1 cars, which for the rest of the 1970s were essentially scaled-up F2 chassis. Meanwhile, March was going from strength to strength in Formula Two and Formula Three. Also, the German team Eifelland entered under its own name a 721 much-modified with distinctive and eccentric bodywork by designer Luigi Colani for its driver Rolf Stommelen. This car was extremely unsuccessful, and later reverted mostly to conventional 721 form and was used by John Watson to make his F1 debut for John Goldie's Goldie Hexagon Racing team. March's only notable result was Peterson's third place in Germany. 1973 was the low point for March in Formula One. The four extant 721Gs were re-bodied and fitted with nose-mounted radiators and the crash-absorbing deformable structures that became mandatory that season; although no new chassis were built, they were re-designated 731s. Without significant STP money, the March factory team was struggling, running an almost unsponsored car for Jean-Pierre Jarier (who mainly concentrated on F2, winning the championship in a works March-BMW), while Hesketh bought a car for James Hunt to race. Jarier was replaced by Tom Wheatcroft's driver Roger Williamson, who suffered a fatal accident in Zandvoort (at which race March privateer David Purley attempted to rescue Williamson from his burning car). The Hesketh team, after an initial non-championship outing using a Surtees, bought a March which was heavily re-developed by Harvey Postlethwaite and became a regular points-scorer, again hinting that there was little wrong with the basic concept of the 721G/731. 1973 marked the first year that F2 became more important to March than F1, with the new two-litre rules heralding the beginning of a long relationship with Paul Rosche at BMW. March undertook to buy a quantity of BMW engines each year in exchange for works units for their own team; the BMW unit was standard-issue for the 732 F2 car and to use up the rest of the units March also manufactured a two-litre prototype until 1975. Some of these had an unusually long life and were still competing (albeit much-modified) in Japan in the early 1980s. In 1974, the factory team ran Howden Ganley until he left, having signed with Maki as their number-one driver. Then March ran Hans-Joachim Stuck in a Jägermeister-sponsored car and Vittorio Brambilla in a Beta Tools-sponsored car. Both drivers were exuberant and occasionally quick, but proved expensive in terms of accident damage.