 The reliability and cost of the R1 Anzani engine had always been an issue, and post-war conditions rendered it unthinkable.Through Benjamin Bowden and John Allen's design company, contact was made with Donald Healey, who recommended using a souped up Riley Motor engine, as he had employed in the Healey-Abbott· Suspension and modified frame from the Riley stable provided the back-bone for what was to be an interesting but doomed venture.180 bhp from the heavily modified engine was forecast, coupled to a fairly advanced body, suggesting that a 135 mph maximum speed was achievable.