Whilst down on absolute power compared to the 4-litre V8 monsters of its competitors, the compactness and light weight of the car, engine and gearbox gave the GR51 a greater power-to-weight ratio, which resulted in a car perfectly suited to the tortuously twisty hillclimbs of the British Championship. With Scottish father-and-son duo of Graeme Wight and Graeme Wight Jr. campaigning the car, Wight Jr. sealed two consecutive championships at the wheel of the GR51 in 2001 and 2002.
Although less powerful than its competitors' 4-litre V8 engines, the GR51's compactness and low weight provided a better power-to-weight ratio, making it ideal for the challenging hillclimbs of the British Championship. With Scottish father-and-son duo Graeme Wight and Graeme Wight Jr. driving the car, Wight Jr. won two consecutive championships in 2001 and 2002.