For 1935 the Firefly became the Firebird (SA 13.22). Mechanical modifications paralleled the Speed 20 SC: bore up to 73 mm, stroke to 110 mm for 1842 cc. The all-synchromesh gearbox was fitted, the chassis being modified to take it. The radiator shell was now slightly pointed instead of flat. Saloon bodywork was by Cross & Ellis, or to the same design by Holbrook, rather more commodious than the Firefly saloon despite no increase in track or wheelbase. The open bodies, tourer and drophead, also by Cross & Ellis, were much prettier than the saloon, and consequently more desirable now. Running gear was virtually unaltered from the Firefly, but chassis lubrication was by grease nipples grouped on the sides of the scuttle under the bonnet instead of by the "one shot" method of the larger cars.