For starters, I don't think the SVT rears would fit under 15" wheels, let alone 14"...the stock fronts are 258mm while the SVT rears are 289mm, and the stock front brakes are a tight squeeze even under the 15" wheels.
Also, having a larger rotor in the rear will change the brake bias...if you're going to put the SVT rears in that means you'll have to upgrade the fronts at least to 300mm rotors.
Also, having a larger rotor in the rear will change the brake bias...if you're going to put the SVT rears in that means you'll have to upgrade the fronts at least to 300mm rotors.