After lifting your vehicle it is highly recommended to install a raised steering arm to correct the vehicles steering geometry. Due to the increased height, a vehicles turning radius can be affected. This raised steering arm is specifically engineered for lifted 3 bolt open knuckle steering applications and is a simple solution to correct draglink alignment and reduces steering vibration. ONLY fits models with 3 bolt open knuckle steering.2-3 hourshttps://s3.amazonaws.com/roughcountry/install/92660000A.pdf1969-1987:4WD:Chevy:C10/K10 Pickup;1969-1991:4WD:Chevy:C10/K10 Suburban;1973-1987:4WD:Chevy:C20/K20 Pickup;1973-1991:4WD:Chevy:C20/K20 Suburban;1969-1987:4WD:Chevy:C30/K30 Pickup;1988-1991:4WD:Chevy:C3500/K3500 Pickup;1969-1991:4WD:Chevy:K5 Blazer;1969-1987:4WD:GMC:C15/K15 Pickup;1969-1991:4WD:GMC:C15/K15 Suburban;1973-1987:4WD:GMC:C25/K25 Pickup;1973-1991:4WD:GMC:C25/K25 Suburban;1969-1987:4WD:GMC:C35/K35 Pickup;1988-1991:4WD:GMC:C3500/K3500 Pickup;1970-1991:4WD:GMC:Jimmy