66 Dart GT HT Whatsitgonnabe?

4 square plates the 2 in the back are fwd of the wheel openings and have rectangular access holes so you can get to the nuts that hold the leaf spring fwd eye brackets to the frame. They tie to the rear framerails, the spring eye mount pad, the floor pan, and the rocker panels. These boxing plates in the back are similar to ones used in big block 4 speed cars and all convertibles. On high horsepower cars it keeps the fwd leaf spring bracket from moving under hard launch. Ex. 6,000 Rpm side stepping of the clutch.

The front ones are behind the front wheel wells. And tie the front framerails to the rocker panel , the floor, and the existing triangle gusset. You notice they have large round access holes in them. These were used on big block 4 speed cars and convertibles to eliminate or reduce cowl shake, and torsional flex induced by a heavier big block being told to turn at a high rate of speed.

I will also be removing the thin sheetmetal lower radiator support, and.building one out of 2"x2" boxed steel running it under the radiator. This will tie the framerails together at the front to prevent torsional flex ahead of the K frame.

Most people forget that on a unibody car, the rocker panels are a structural element. They ARE your framerail.

Matt