EVO MFG Double D Bolt-On Long Arm Upgrade kit includes the necessary brackets, long arms, and hardware pack. Features: EVO MFG Adjustors, full on car adjustability of control arm length, no need to remove control arm to adjust. Complete Bolt-On Installation, Weld-On if desired, welding will not void warrantee. No need to remove the gas tank to install. Proven Currie Johnny Joints. Ability to retains factory high clearance transmission cross-member. Notes: 2010+ models require exhaust modification which requires some welding. Cutting and Drilling Required for Complete installation. Can be installed as a weld on if desired.