There are two schools of thought on connector installs, 1) install with everything in place, car on the wheels so all stresses are naturaul and installation of connectors does not change any panel alignmnet or panel gaps. This is probably the best approach to take if you car is all together, in finished condition, with nice paint and everything presentable. 2) set chassis up so everything in level, plumb, and square. This requires considerable effort as you need to know the origianl unibody measurements and locations to verify everything is exactly the right place, and it may require tweaking to get everything in alignment. Benefit to this is the structure then becomes correct in all aspects and you weld it in to this "perfect" position so every mod afterwords produces truer results. You do discover lots of weird things when doing this. For example, my car was bent like a potato chip. I had to stack up two engine blocks in opposing corners to flatten mine out to be level. In worst case scenario, time on a frame machine may be required to spring it back to shape, but you'll have great results once its done.
