FWIW, you can't just toss 1500HP into a mustang and drive off into the sunset.
The entire car would have to be re-built and re-enforced, including the basic structure of the car, to handle such power. You're talking big money. I'd guess $50k+, on top of the cost of a car.
2012 GT Premium, Brembo PP, MT82, 3.73s, Blk/Blk. Bama 93R, Koni Yellow Rear Shocks, Hawk Ceramic pads, Luxurious & Plush Floor Mats