[LMH]

Not true. John Tojeiro left AC after designing the Ace. Alan Turner did some redesigning of the Ace and the Ace 2.6. The Cobra was basically a 2.6 Ace with fender flares for the then new Dunlop 5.5" wheels. Shelby did not design the Cobra but did develop the racing versions. Alan Turner is pretty much responsible for the design of the Cobra.
Larry