Without knowing your weight distribution, I can't really make a completely accurate measurement, and I also need to look up the dimensions for the lever arms on the torsion bars. If you could do that for me that would help.
The measurements are the distance from the center of the spring plate cover (where the rubber bushing goes) to the center of the wheel bearing/hub. Try measuring with two or three large rulers so that you can keep one parallel to the wheel while using the others to find the centers of the torsion bar access hole and the center of the wheel hub, while keeping everything at right angles, basically like a large pair of calipers.
The other distance is ball joint to torsion bar centerline in the front which I think is 12 inches.
Then I need to look up the lengths of the torsion bars between the splines.
All of these distances effect the wheel rate (disregarding for now the tire spring rate).
But, before factoring that in, 22/26 may be a better setup. It would give you about a 33%/66% stiffness distribution, which is a little rear biased. If you can only do a rear bar, you could do 23/26 since a front stiff car understeers and the rear anti-sway bar will add oversteer.
It depends on how you use the car. For most things like street and high speed track you want stability/understeer. For autocross you want more oversteer.
You can email me at
maxsluiter@earthlink.net