Yes, there is a motion ratio that has to be calculated for the sway bars since they do not attach at the ball joint.

Just curious, have you done any recalculations for what rear wheel rate you would need if using the 1.22 torsion bar and 1.25 sway bar?

As an aside to anyone else following this, how would you build adjustability into a stock swaybar? Certainly changing the length of the lever arm would do it, but I don't know how easily that coud be accomplished since the lever arm is splayed outwards at its attaching point. Not to mention the interference you would have with the K frame. Do you change the length of the end links?