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A rare Jaguar XJR-15 race car is for sale, complete with a 450-horsepower, 6.0-liter V-12 engine. Juan Manuel Fangio II raced it to victory at the 1991 Formula One support race at Silverstone.

But as a road car the XJR-15 was unapologetically raw, hardly bothering to mask its competition roots. For customers brave enough to want to use the car on the road, Jaguar Sport fitted bumpers ...