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The GR-1 shares its suspension, rear suspension mounts, extruded aluminum chassis rails, rack and pinion steering gear, steering column and four-piston Brembo brakes with the Ford GT. We know from experience that the GT's underpinnings provide world-class ride and handling, and should easily cope with the GR-1's extra power. The 6.4-liter V10, which might not survive if production goes ahead, began its life in the 427 sedan concept shown at Detroit in 2003. The engine makes 605-hp at 6750 rpm and 501 lb-ft at 5500, the same output Ford boasted for the Cobra and enough to run from 0 to 60 mph in less than four seconds. The six-speed transaxle (also lifted from the GT), wheelbase, and track are also unchanged from the roadster, as is, according to Mays, the 52:48 (front/rear) weight distribution. The car rides on the same 275/40 R18 front, 345/35 R19 rear tires, with the rubber mounted on unique, 12-spoke alloys rather than the Cobra's seven-spokers.