BRAND NEW ALDAN AMERICAN ADJUSTABLE COILOVER CONVERSION KIT WITH TUBULAR CONTROL ARMS FOR THE FRONT OF THE VEHICLES LISTED BELOW SHOCK KIT, TRUELINE, 75-79 GM X-BODY, REAR, SINGLE ADJUSTABLE, SET OF 2. ALDAN REAR BOLT-ON SHOCK ABSORBER KIT INCLUDES 2 TRUELINE SERIES SHOCKS, T-BARS & HARDWARE. USES OEM SHOCK MOUNTING LOCATIONS. NOTE: COMPATIBLE WITH 1973-1987 STYLE SPINDLES COMPATIBLE WITH: CHEVROLET: 1963-1986 C10 2WD WITH BIG BLOCK CHEVY 11987 R10 2WD WITH BIG BLOCK CHEVY 11988-1991 C1500 2WD WITH BIG BLOCK CHEVY GMC: 1963-1986 C15/C1500 2WD WITH BIG BLOCK CHEVY 1987 R1500 2WD WITH BIG BLOCK CHEVY 1988-1991 C1500 2WD WITH BIG BLOCK CHEVY FEATURES: BOLT-ON DESIGN WITH FULLY ADJUSTABLE COILOVERS & TUBULAR CONTROL ARMS DOUBLE ADJUSTABLE SPRING RATE: 650 LBS./IN. SHOCK POSITION: FRONT POL UPPER & LOWER TUBULAR CONTROL ARMS INCLUDED UPPER AND LOWER BALL JOINTS INCLUDED # OF VALVING SELECTIONS: 66 FRONT BUSHING MATERIAL: POLYURETHANE HARDWARE INCLUDED: YES YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLETS FOR THESE COILOVERS HERE.