Worn out lower control arms on S197 Mustangs are a common reason for pops and other annoying sounds coming from the front suspension. Chances are the bushings and ball joints have worn out. To ease the install on our Mustang we decided to use the ¬Ford Racing GT500 Lower Control Arms ( M3075E ). These control arms include pre-installed performance bushings and ball joint. Having these already installed on the control can cut down drastically on your install time.