A body rear frame rail help

bricud said
Those are some great pics. It looks like on the back of the car the jig is attached to the back of the frame rail. When removing the rails (one at a time) where is a good place to support the back of the car? Looks from the pics that it is supported by the torque box or close to it. Maybe what is referred to as Rocker clamps by Cuda 416. Since I am only doing the rear rails, I would think I could support/stabilize the front with a pair of jack stands under the front rails or K member and make a jig to support the back of the car only.

Rocker clamps literally clamp onto the bottom of the rockers by grabbing hold of the pinch weld at the bottom. They are used when you don't have other options for support. On a frame rack it's the way a car is mounted for straightening pulls etc. When you gut the rear of your car, you'll need to support it by the rockers most likely.

Here is a close up or a commercial unit.