These Tubular Lower Control Arms are direct replacement for factory lower control arms. Uses stock Mustang Il/Pinto shocks, springs and strut rods. Arms arrive fully assembled ready to install, with lower shock bolts and nuts. Ball joints and bushings installed. All welds heli-arc welded for maximum strength and appearance. Fits all Heidt's Mustang II IFS kits as well as most other after market Mustang II kits.