CCV trialing differs greatly from RTV trials in the vehicles used. Since "anything goes", CCV trials rely on having the correct vehicle to a much greater extent than in an RTV trial. Competitors are able to design and build vehicles that are much more optimized for off-road use than in the lower ranks of trialing. CCV vehicles have powerful engines, high ground clearance, light, minimalist bodywork and good approach and departure angles. For many years, in the UK, the ultimate CCV vehicle could be built by taking the chassis of a Range Rover, removing the body, cutting the chassis down to an 80-inch wheelbase and mating it to the body of a Series I Land Rover, retaining the Range Rover's V8 engine and coil-spring suspension in a light, easy to maneuvre body. In recent years the value of early Land Rovers and Range Rovers has risen to the extent that this is no longer practical. CCV triallers now usually base their vehicles around Land Rover 90s or a standard 100-inch chassis from a Range Rover or Series I Discovery. The Suzuki SJ series of vehicles also make good bases for CCV-spec vehicles. Some vehicles are specially built, taking the form of light "buggies" with tractor tires and "fiddle" brakes for the best performance.