When Ford introduced the wheel hub in 1994, it changed everything for the Mustang community. Suddenly, you no longer had to worry about packing wheel bearings in the rotor anymore or worrying if your 5 lug conversion wheel would fit on your fox body. This new era of Mustang solved those problems. The integrated bearing in the wheel hub assembly allowed you to avoid the greasy mess of wheel bearings and allow you to bolt this new hub to the spindle when maintenance was needed. The new design was hope for Fox Body Mustang guys that they could convert to 5 lug and not worry about a center cap fitting.