Shaft Kit: Front Control Arm 70-81F BILLETThese may appeal to any 70 81 Camaro, Firebird, TA owner replacing the UPPER control arm shaft needing to use factory specs. You can get the required camber and caster right again with these, using rubber or US Energy Polyurethane bushings.. or most tubular (when legal etc) in the upper finish. Supplied Each. This is also the option for 1980 81 Camaro Firebird TA owners as the factory NEW upper control arm shafts are in recent years harder to find