This is what the trussed differential looks like now. The nuts on those heim joints are more than 1" across the flats. (They are very big.) The heim joints can be bolted to the outer holes for more tire bite on corner exit. (I still don't fully understand the theory behind that yet.) If you race on a track where you only turn in one direction, you can bolt the heim joints to either side to move the roll center accordingly. The imaginary point where the two pushrods intersect will define the static roll center. This places it much lower than stock, and levels out the roll axis of the car, providing a much more neutral cornering behavior.