 The Mk4 was the first design that Lola produced for the top tier of motorsport.Design of the car broadly followed Broadley's experience in the Formula Junior category, with a steel spaceframe chassis braced by bulkheads in front and behind the driver.The engine was carried within the chassis, and cooling was by a radiator mounted at the front of the bodywork; two tubes of the spaceframe acting as coolant pipes to and from the engine.