[trularin]

Tony, I think I'd take a cutoff tool and remove those ears on top of that truck tube. They will not be used any more and will have some weight. I do not see a top link, maybe it is my eyes or the pic, but you will get better wheel/tire control from top links and those excellent bottom links.

Looks like the pan hard will hit the frame on a full travel test. Probably just the view.

With a four link and panhard, it will be hard to be impressed with a sway bar, but you could try an adjustable unit that can be tuned for the track and tires you are running.

Just my $0.02