This system utilizes the factory front Coilover shocks with bolt on extension mounts that secures the shocks to the lower control arms. There is no need to disassemble The factory front shocks and coils for installation. Simply bolt the mounts on the lower portion of the factory shock for a fast install time. The Basic II System also features Fabtech's signature arched lower control arm crossmembers and ductile iron spindles that provide superior ground clearance with the ability to use the stock spare tire. Other features include lower control arm eccentric cams for easy alignment, front differential skid plate, sway bar drop brackets, 5 inch double pin cast iron rear lift blocks and u bolts. The Basic II system offers two rear shock options including Twin Tube Performance shocks or Dirt Logic 2.25 take apart shocks.