 Ray Wiggin at Reliant Motor Company was looking for a chassis specialist in 1966 and Crosthwaite moved there first as a consultant to modify the SE4 Scimitar GT Coupe chassis and suspension so improving the ride and handling.Stirling Moss said of the changes - 'it now qualifies for the classic definition of a grand touring car, one which permits driver and passenger and their luggage to cover long distances on European high speed roads in complete comfort'.Crosthwaite was asked to install Ford’s new V6 in place of the old straight 6-cylinder engine in the SE4a and improve the handling and road holding of the Turkish made Anadol.