BRAND NEW ALDAN AMERICAN ADJUSTABLE COILOVER CONVERSION KIT WITH TUBULAR CONTROL ARMS FOR THE FRONT OF THE VEHICLES LISTED BELOW (ALDAN PART #300138). THIS COMPLETE KIT IS DESIGNED TO WORK WITH FACTORY TRUCK CROSSMEMBERS AND WILL CONVERT FRONT SUSPENSIONS TO FULLY ADJUSTABLE COILOVER SHOCKS WITH TUBULAR CONTROL ARMS. NOTE: FOR USE WITH 1973-1987 STYLE SPINDLES APPLICATIONS: CHEVROLET: 1963-1986 C10 2WD WITH SMALL BLOCK CHEVY 1987 R10 2WD WITH SMALL BLOCK CHEVY 1988-1991 C1500 2WD WITH SMALL BLOCK CHEVY GMC: 1963-1986 C15/C1500 2WD WITH SMALL BLOCK CHEVY 1987 R1500 2WD WITH SMALL BLOCK CHEVY 1988-1991 C1500 2WD WITH SMALL BLOCK CHEVY FEATURES: BOLT-ON DESIGN W/ FULLY ADJUSTABLE COILOVERS & TUBULAR CONTROL ARMS DOUBLE ADJUSTABLE SPRING RATE: 650 LBS./IN. SHOCK POSITION: FRONT POL UPPER AND 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 BOOKLET FOR THIS KIT HERE.