Those two set-ups are again- European.
We still run spacing on the outer hub, I personally run 3mm outside, 2mm inside, to keep it almost flat. I could run 1mm outside 0mm inside, but it actually makes the car have less traction.
We use the outside to "tune" our camber gain and the inside to increase or decrease our roll stiffness.
As for roll centers, I remember John Stranahan measured them on the TC5. He found the 1B was about ground level. This would be the roll center that theoretically generates the most grip. The 0B would have a slightly lower one. If I was in low grip, I would try the 1B Roll Center and adjust my springs accordingly. You would be able to get away with soft springs that would handle the bumps, give you better forward bite on the lower grip conditions and it would allow you to run more optimum camber link angles.
Kevin, suck that you didn't like the stud mounts, once you unlock the potential of them, it really is a new world. There is a reason why the Top cars out them have them (not saying the TC6 is not without them though- let's make it clear), it just makes the car more adjustable. But everyone is different, so you have to do what you have to do.
The springs are still about 4-6 weeks out. The swaybar collars hopefully the same or less.
Warren, good job and thanks for the words!