"Clutchless" manually transmissions aren't really clutchless. It's simply that a computer is used to activate electro-mechanical devices which engage and disengage the clutch. They are usually used in conjuction other devices which electromechanically change gears for you - usually at the touch of a button, or push/pull on a paddle shifter located behind the steering wheel. They have become options on mainly European high-end vehicles - BMW, Porsche, Ferrari are a few that offer the "clutchless" option on some of their vehicles. The computer/programming/sensors that's required to operate one of these drivelines is EXTREMELY complex - nothing is available currently to convert a Mustang manual tranny to this type of operation, and it won't become available. It would cost far too much for there to be any type of market for it.