Torque Arm Questions

[myth]

Ok, I posted a thread in the suspension section a couple of weeks ago with zero results. Since then I have found a couple of answers to my questions. But I still have a couple of shady areas that I could use some clarification on.

I am switching from a triangulated 4 link to a torque arm. The truck is a 2000 regular cab s10. I have scaled the truck, i know where the center of gravity is and I have also figured out the center of gravity height. The truck is purpose built for autocross and occasional road course. Im not looking for a good ride, handling is the number one goal. Ok, my questions are. Do I shoot for the torque arm pivot point to be on the center of gravity or do I go longer or shorter(I understand what the different lengths will do)? How important is it for the torque are pivot point to at the center of gravity height?

As always thanks for any ideas or help.

Ryan