Rear End Alignment Question?

I have been talking to a local speed shot here in my home town about installing the Wild Rides upper and lower S-Box. He told me if that is what was wrong we would work out a trade for some lighting for his shop if I helped w/ the install. So I got that squared away as a worse case...well I will find out tonight for sure.

Well more questions than answers..I looked close at the torque boxes. Uppers look perfect no cracks, tear, twist, etc. Lowers look straight and solid still only sign of damage is from the looks of it being lifted on jack stands or on a lift. Passenger side bushings are cracked and showing some signs of fatigue and the drivers side show wear just not as bad. So I am looking for suggestions. I am thinking about going ahead and buying some adjustable control arms and poly bushings and while I got it down invest in the bracing kit. Thoughts suggestions

Okay well I am ordering poly bushings tomorrow and a bracing kit. If that dont do it...well Wild Rides will be getting a order from me.

Okay guys one more question. I measured the wheelbase, the driverside is 100 & 1/2 inches and the passenger side is right at 100 & 3/4 inches. Do you think that the 1/4 out is coming from bushings being worn and 20 yrs old? I plan on getting the bushings or just go ahead and upgrading to the control arms. While doing this go ahead and install the braces. My question is are the braces worth it? Will they provide enough strength for some hard launches mainly street driven but some occasional track use? Or do I need to upgrade to the wild rides s-box setup or something similar?

EDIT: Also I did notice some of the alignment appearance was coming from the body kit. Its not perfect.