8. While not part of our standard upper and lower control arm kit, we opted to upgrade the axle housing bushings. To extricate the stock rubber bushing, we’ve found the easiest way to tackle this in the car is with a bushing removal/installer tool. Mustangs Unlimited carries the excellent Maximum Motorsports version under PN MMT1 for $42.95. This kit makes pushing an old bushing out and a new bushing in as simple as turning a wrench.