Ridetech 11054499 58-64 IMPALA REAR LOWER STRONGARMSRidetech 11054499 58 64 IMPALA REAR LOWER STRONGARMS When converting a 1958 1964 Chevy B Body to air suspension, consider upgrading the stock lower trailing arms to these StrongArms to add strength and reduce flex. Fitment includes 1958 1964 Bel Air,Biscayne,Brookwood,El Camino (59 60),Impala,Kingswood,Nomad,Parkwood Designed for use with CoolRide air suspension system Constructed from 1. 5 x . 188 wall DOM tubing Powder coated Satin Black