March 86C actually won the race twice in a row, 1986-1987. On the other hand, when Williams directly licensed the FW07 design to Bobby Hillin, the resultant Longhorn cars were a failure. An important sideline appeared when Group C and IMSA GTP racing started; March built a line of sports-prototypes descended from the unsuccessful BMW M1C, which, fitted with Porsche or Chevrolet engines, enjoyed considerable success in America (but less in Europe). The biggest success for March in sportscar racing was victory in the 1984 24 Hours of Daytona. A works BMW deal in IMSA suffered from engine problems but the cars were intermittently very fast. In 1982, Corrado Fabi took March's last Formula Two title; the formula was being increasingly dominated by the works Ralt-Hondas. March abandoned the Formula Three market at the end of the 1981 season; they had enjoyed periods of dominance in the category, but this had faded in favour of Ralt, though. The margins on an F3 car were low and the factory could be more productively occupied building F2s and Indycars. The new Formula 3000 in 1985 gave March much more success for the first few years of the formula, with Christian Danner being the first champion in a March chassis. He was followed in 1986 by Ivan Capelli and in 1987 by Stefano Modena. These early F3000s were little more than developments of the 842 F2 car (as were the Japanese F2 cars in 1985-86). In 1986, the 86G was modified into the BMW GTP by BMW North America for use in the IMSA GT Championship, but saw little success. Meanwhile, March became by far the dominant marque in Indycar racing, reaching the point where 30 out of 33 starters in the Indianapolis 500 were Marches. Into the late 1980s, the F3000 programme started to be eclipsed by Lola and Ralt, and was virtually obliterated by Reynard Motorsport's entry to the market. March began a new Formula One program in 1987 with the Ford-engined 871 which was sponsored by Japanese real estate company Leyton House and driven by Ivan Capelli, who had brought his F3000 sponsor to the team (in fact, for the very first race an F3000/F1 hybrid called the 87P had to be used as the 871 was not ready). In August 1987, Adrian Newey came to March F1 and designed the March-Judd 881 for Capelli and Maurício Gugelmin to drive.