 The composite chassis of the car was constructed for the team by the engineering firm Courtaulds and finished in a metallic british racing green with BRM's traditional orange nose.The engine was designed by Graham Dale-Jones and built by Terry Hoyle's JHS company using a block derived from the Weslake V12 Grand Prix unit; it was branded as a 'BRM'.Claimed output was at 11300 rpm, but it proved to be uncompetitive and unreliable.