Frame Rocker IRS 68-72 A-Body 4x2 Perimeter-X Fully Welded Rocker-Arm IRS Rear With A-Arm Front Suspension. Includes Front & Rear Bumper Mounts, 2x2 Outriggers, Engine Frame Horns & Exhaust Ports . ------- SPECIAL ORDER PART NOT CANCELABLE OR RETURNABLE FOR ANY REASON---------