StangSuspension.com Upper and Lower Rear Lower Control Arm Package - Just $249.95 We are now offering a lower cost, but extremely effective way of increasing your Mustang's suspension performance. StangSuspension's new street upper/lower control arm set will help locate the rear axle, reduce wheel hop, and increase traction. Replace your stock rubber, flexible control arms with these new tubular steel upper/lower arms. StangSuspension Part # CARMKITB7989 and CARMKITB9404 Click Here for the 1979-1998 Control Arms Kit Click Here for the 1999-2004 Control Arms Kit E-mail sales@stangsuspension.com with questions.