Modernize your early Ford and Mercury front suspension --- adjustable upper control arms from GEARHEAD have built in +3° of caster to improve return to center with today's radial tires. The camber curve has been optimized by utilizing 'Shelby Drop' geometry in the billet aluminum cross shaft. These arms feature our maintenance-free xAxis™ Sealed Flex Joints for tight, responsive handling. Camber can be set to 0°, -1°, or -2° for superior cornering. Use these arms with either an OE style spring/shock or an aftermarket coilover kit can be found in our store. Gearhead arms come equipped with stock style ball joints and all of the mounting hardware.