Spy photographers have captured physical evidence that Ford Motor Company is currently working on an S650 Mustang high-performance model that slot itself above the GT trim level. No surprise there. But there are two questions that need answering: is this performance model going to launch for the 2024 model year with the rest of the S650 family; and what will it be called? S650 Mustang: High-Performance PrototypeThis S650 Mustang mule, seen on Mustang7G, appears to have a Brembo braking setup and the same exhaust and rear diffuser design from what we currently see on today’s S550 Mustang Shelby…