ok, so this isnt a Mustang but is a SVT
A friend I did work for has a 94 lighting truck with the pedal pulsating when pressing the brakes. Not sure if it was doing this before or after because he came to me about changing them, but didnt say why. The Truck had wilwood front cal, brakes, and rotors. We changed it all back to stock with new cal, brakes, and rotors, bearings.
The rear has been converted from drum to disk brakes of which I have changed with new rotors and pads.
The pedal pulsates, maybe air in the line somewhere? I bled the front because of the changing of the calipers. Any ideas? The truck has ABS.