A superb entry has been received for the Masters HGP race at Sonoma Raceway for the CSRG Charity Challenge over the weekend of October 3rd-5th. Cars from the 1970s and 80s will thrill fans at the California Circuit with a 21-strong entry. The event is run by the San Francisco Bay Area's Classic Sports Racing Group (CSRG), one of the oldest historic racing organisations in America, and proceeds are donated to Speedway Children's Charities of Sonoma. The two 1980 Ferrari 312T5s of Bud Moeller and Larry Kinch head the entry, the cars taking on the ex-John Watson McLaren MP4/1B of Larry’s son Nathan Kinch who was the man to beat in Montreal for the opening Masters HGP races. Danny Baker’s ex-Rosberg/Daly Williams FW08 and the Shadow DN9 of Charles Warner complete the class for the later 1980s cars, which will be the benchmark for the opposition.The entry contains some notable cars and constructors, such as John Delane’s ex-Francois Cevert Tyrrell 002, the ex-Ronnie Peterson March 761 of Greg Thornton and Doug Mockett’s ex-Scheckter Wolf WR6 along with the Penske PC4 of Ron Maydon and the ex-Jacques Villeneuve RAM March of Anthony Nobles.Richard Griot drives his McLaren M23 from he 1976 James Hunt title-winning season, Harindra da Silva has the ex-Jean-Pierre Jarier Shadow DN3 and arch Lotus enthusiast Chris Locke drives his 1976-built 77.“I'm delighted that Masters HGP is coming to my home track, Sonoma Raceway, for this year's season finale,” says Chris Locke. “Sonoma Raceway is a challenging 2.6-mile, technical circuit well suited to historic F1 cars. It has an initial series of third and fourth gear turns with blind entries and significant elevation changes, a long run up to a hairpin, and a return through a series of esses and high-speed sweepers.”The Masters HGP will be the showpiece grid at the popular event, which has grown over the last five years into a must-do for historic racers across America and will conclude the inaugural season fro Masters HGP, in which the UK-based Masters Historic Racing organisation has taken hold of the category in the US and steered its course to major events and bigger grids.“Masters HGP has had a fantastic inaugural season, thrilling spectators at with the Canadian Grand Prix support race, great racing and Blues concerts at Mont-Tremblant, and Midwest hospitality and the incredible circuit of Road America,” says Locke. “I look forward to more great venues and trans- Atlantic camaraderie and competition with Masters HGP next season.”The cars will have two 25-minute races, one on Saturday and Sunday of the weekend, and fans can be assured that despite the value of the cars, the drivers will certainly not be treating them as museum pieces. Instead, expect fierce racing in the final showdown of the year for the Masters HGP gladiators.