1963-72 Inner Frame Stiffener, Boxed
1-Piece Driveshaft, Trailing Arms
For Dropmember Level 1, Static Dropped, & Stock/Factory Suspension Trucks

Our new Boxed Inner Frame Stiffener is designed to strengthen and reinforce your frame and is an ideal solution for LS swapped trucks.

The IFS incorporates adjustable transmission, carrier bearing and trailing arm mounts to make installation easy.

An Energy Suspension transmission mount is necessary. We recommend one of the two below for GM transmissions:
Energy Suspension 3.1108G GM Transmission Mount
Energy Suspension 3.1158G GM Transmission Mount - Short

• 1963-72 Chevy Trucks
• Dropmember Level 1 Trucks
• Static Dropped Trucks
• Stock/Factory Suspension Trucks
• 1-Piece Driveshaft