Hello this is David. I own a 2006 ford mustang gt maual. i will be going on a adventure making this car into a super car. i have done tons of research on what makes a koenigsegg agera r so fast. it has a 5.0 v8 4v twin turbo at 20 psi of boost and rwd. its also a mid engine vehicle. i will be taking the mustang to replicate similar characteristics of this car minus making it a mid engine vehicle. in order to reach similar top speeds of the koenigsegg the mustang will need a t56 magnum xl with 2.97:1 1st gear ratio and 3.31:1 final drive ratio to go over 200 mph with drag. 12.5in wide tires in rear. 10in wide in the front. apr widebody kit with gtc500 rear wing and diffuser. 5.3l block with upgraded heads to handle reving over 8000 rpms. the ford performance 5.3l block has the same if not tad bit higher specs as far as bore and stroke goes with forged internals. and will handle the abuse im about to give it. add in a twin clutch and your golden. stay tuned over the next fews years and watch how i will take this mustang to all new evolutions. thanks for your support.