Now some commentary on the rear suspension.
This is a picture of the rear upper control arm and the trailing link. You can see the rear upper control arm has a cross tube welded on it (between the ends that attach to the frame). This is NOT original. The original street cars did not have this tube. The original S/C cars had a plate that was welded between the tubes (if I remember right). We welded tubes in the rear upper control arms of our early cars as well, but we welded them much closer to the pivot point of the control arm so they were more stable.
The trailing link is very interesting as well. There is only one rod end (heim joint as the English say) on the trailing link and the trailing link can only be put into the rear lower control arm ONE WAY!!! That means you have to rotate the original trailing links 360 degrees to adjust the toe! This is VERY BAD as you have very little fine adjustment of the rear toe. On our cars, we put a left hand threaded rod end in one end and a right hand threaded rod end in the other end for infinite adjustment. That way we could dial the toe in perfectly.
