CRUX SWRSB-58CRUX (SWRSB 58) RADIO REPLACEMENT W SWC RETENTION FOR SAAB VEHICLES The CRUX SWRSB 58 is a radio replacement interface for select Saab vehicles. It facilitates the integration of an aftermarket radio to retain factory features in select Saab models. This enhanced interface is also pre programmed for retention of steering wheel controls. FEATURES: Retains factory features in Saab vehicles while functioning with aftermarket radio Retains Steering Wheel