its the Marcos Mantra:
In 1992 Marcos left the kit car business and launched the Marcos Mantara that was sold through dealers in limited numbers. The Mantara was powered by a 3.9 litre Rover V8. For a return to GT racing, a range of modified Mantaras was also produced in the LM (Le Mans) versions. In order to qualify as a production vehicle, road going cars were also made. Several version of the LM were made such as the LM400 (with a Rover 3.9 litre engine), LM500 (Rover 5 litre) and LM600 (with 6 litre Chevrolet small block V8). Only 30 road going LM cars were ever built and of these only one was a road going LM600.