44. Their first car, XJR6, used the engine, but in the following year the engine was upgraded to 6.9 L and in 1988 the XJR9 used the engine's most famous displacement of . By 1991, the V12 was good for 7.4 L inside the XJR12, developing an impressive TWR also upgraded production Jaguar cars (usually XJRS's), with a variety of styling, handling and performance modifications. Most of the cars thus modified were straight from the Jaguar factory and sold through Jaguar dealerships. By 1989, TWR were selling moderate numbers of XJRS's fitted with a version of the V12, which pre-dated the Jaguar production version by some 3 years. Lister Lister Cars, a well-known Jaguar tuner with a long history of technical collaboration with the British automaker, made frequent use of this powerplant. The first Jaguar Lister XJRS's were built by the company BLE Automotive in Erdington, Birmingham in the early 1980s until the Lister brand was passed on to WP Automotive of Leatherhead. In 1991, they fitted the version of the engine, with a bore and stroke, into a modified Jaguar XJS, which was rebadged Lister Le Mans. This engine officially produced and . From 1993, Lister Cars owner Laurence Pearce produced the company's first in house design the Lister Storm, which, naturally, continued using the V12 engine, both on the road and on the track, the car becoming a mainstay of the FIA GT Championship and several national championships for the following decade. See also Jaguar XK6 engine Coventry Climax Jaguar AJ6 engine References External links V12 engine page at the Jaguar Daimler Heritage Trust site V12 Gasoline engines by model V12 engines