yes it will but if you havee one with disc brake there is some work that needs to be done like the rear brake lines that are routed to the drum brakes are not compatible with the newer SN-95 rear calipers.and you're going to have to make some minor modifications to the e-brake on your car so that it works correctly with your SN-95 rear calipers.The mission of ratcheting mechanism on the stock handle is to adjust the e-brake. It does this by placing tension on the cables and ratcheting up a tooth at a time. This function needs to be disabled with disc brakes.There are two options, one is unwind the spring and hope the spike lines up with the ratchet every time. By far the most common is to push the handle down and manually unwind the spring about a 1/2 inch, then pin the handle with a bolt. This makes the handle non-adjusting but still pulls on the cables. This can be done with a bolt, a nail, or a zip tie. The key is to take spring pressure off of the cables. If the spring pressure on the handle is not reduced or eliminated, it can cause the rear brakes to drag as if the e-brake has been left on.and for the
proportioning valve there are two options
Option 1: A complete '94-'95 Mustang non-ABS brake master cylinder system, including a brake block, came with the SN-95 rear disc brake conversion from MPS Auto Salvage. This could be swapped in and some brake lines would need to be modified, but nothing too difficult.
Option 2: Richard from North Race Cars advises that this is the easiest solution and works great. First unscrew the black plug on the front of the brake block, then remove the plunger and spring. Lastly replace the plug with a combination valve plug PN FMS M-2450-A. This part can also be purchased at your local auto parts store.
the swap is similar to the swap they did in muscle mustang fast fords | 
