1978-88 G-Body SPEC

Base Price:


  • RS exclusive “Laser Rails” precision CNC laser cut and contoured
  • Crossmembers and chassis bracing to allowing for 3″ exhaust
  • Engine mounts for SBC, BBC, or optional LS & LT
  • Adjustable, drop out trans mount
  • Utilizes factory body, bumper, and core support mounts for a true bolt-on installation
  • RS SV by Fox fixed valve coilovers
  • Power rack & pinion steering
  • Easy to adjust upper a-arm eccentric mounts for fast and accurate alignments
  • Wilwood Pro Spindle
  • Parallel 4-Bar rear suspension
  • Single adjustable billet coilovers
  • Ford 9″ housing with 31 spline axles
Free shipping on all chassis orders

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    Bolt On - No Modification Needed
    Floor Modifications Needed
    Bumper Bracket Modifications Needed
    Independent Rear Suspension Available
    Adjustable Track Width
    Powder Coating Available
    Mandrel Bent Tubing
    Welded Tubing
    Clearance for up to 3" Exhaust
    Pro Spindles
    Late Model Corvette Spindle
    Chrome Control Arms Available
    Free Shipping


    SPEC is an engineering focused approach using the latest in manufacturing technology to build the lightest, strongest, and easiest to install complete chassis system. These technologies have been used to streamline procedures resulting in lower cost and shorter lead times. The SPEC IFS is engineered to deliver outstanding performance wrapped up in user friendly package. A completely new proprietary suspension geometry has been designed to provide the best balance of ride quality and performance in its class.
    The Benefits:

    • No kinks, bends or stressed areas that are prone to flex like mandrel bent tubing
    • Ability to contour to stock floors for a low profile design.
    • Stronger, lighter, and more precise
    • CNC located factory mounts built into the frame for easy, vehicle specific installation
    • Frame rail designs to accommodate mini-tubs.
    • Aggressive 7″ ride height for the modern pro-touring look.
    • 100% bolt-on application.