Upgrading a Fox Mustang to five-lug brakes opens up a huge selection of cool wheels to install. A great budget way to do this is with Lincoln front rotors and Ranger rear axles and brake drums. However, what happens when YOU buy this modified Fox and later need to buy a replacement brake rotor at your local parts store? The counter jockey, after asking you the usual “is it a 5.0? Does it have A/C?” and then slides a stock four-lug rotor across the counter at you. “Um, that’s not right,” you state, to which your frustrated counter man says “that’s what the computer says it uses.” See what we mean about knowing your Mustangs?