Installation time is 3-4 hours. Proudly made in the U.S.A.Control arm hardware kit RH006 (Includes upper and lower control arm hardware - Highly Recommended) also available.1967-69 F-Body cars had varying bumpstop locations.Generally speaking 1967 model year cars had bumpstops located on the front sub-frame which made contact with the lower A-arm.Cars made during the 1968 model year had bumpstops located on the front side the lower A-arm.Cars from 1969 model year usually had bumpstops located on the rear side of the A-armThis specific A-arm is designed for cars with the bump stops located on the front of the A-arm.BE SURE TO INSPECT THE LOCATION OF THE BUMPSTOP LOCATION ON YOUR SUB-FRAME BEFORE ORDERING.Control arm hardware kit RH006 (Includes upper and lower control arm hardware - Highly Recommended) also available.