March 85G was penned by a young Adrian Newey, who would later go on to design the championship winning Williams McLaren and Red Bull Formula One cars. It was an aluminum honeycomb monocoque chassis with ground effects, venturi tunnels and conventional wishbone suspension. The body was penned by Frenchman Max Sardou and was quite striking, earning it the nickname "lobster claw". It was the dominate sports racing prototype in IMSA GTP competition from 1982-1985. In 1983 Al Holbert won the IMSA title in a Porsche powered 83G. In 1984 a March 83G won the Daytona 24 Hours. March won the IMSA title again in 1984 with Randy Lanier in a 84G. 11 cars were built but only 4 used Porsche engines. This car was delivered new to John Kalagian who raced it in the IMSA GTP series in 1985 where it finished 5th at Road America, 6th at Laguna Seca, 7th at Watkins Glen and 7th at the Daytona Finale. It then sold to Richard Cleare of the United Kingdom who raced it in 1986 at Silverstone, Brands Hatch, Spa, Nurburgring and to a 1st in class, 14th overall at the Le Mans 24 Hour.