The company also built the one-off Gould Ford Puma for Mike Endean, featuring Xtrac four-wheel-drive, which won the Brighton Speed Trials four times in 2005, 2008, 2009 and 2010.
The chassis, whilst based on a Ralt carbon fibre tub, was further customised for its application in hill climbing.
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.
The Gould GR55 marked a departure from using Ralt F3 chassis and all major components were designed and manufactured "in house".
The GR55 was originally fitted with a Nicholson-McLaren 3.3 Litre V8 derived from a Ford Cosworth XB 2.65-litre Champcar unit but enlarged and naturally aspirated rather than turbo-charged.
The GR55 was originally campaigned by Adam Fleetwood and he duly took back-to-back titles in 2003 and 2004 before graduating from the British Hillclimb Championship to go circuit racing.
After Roger retired from top-flight hillclimbing at the end of the 2014 season Alex Summers added to the success of this chassis, winning the 2015 title driving the car alongside Scott Moran.
To date this chassis has been run with a variety of powerplants from a turbocharged 1300cc motorcycle engine to an enlarged and naturally aspirated 3300cc Cosworth XD V8 proving the car's concept as a one size fits all solution for hillclimbing.