1973-87 Inner Frame Stiffener, Boxed
For Dropmember Level 1, Static Dropped, & Stock/Factory Suspension Trucks
Driver Side Catalytic Converter Specific
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 and carrier bearing 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
|Typical Production Time is 4-5 weeks
|Please email firstname.lastname@example.org for installation instructions.
|CA PROP 65 WARNING
|CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov