Karl,
I have the radius rods from CWI on my early Contemporary and they are very long so I don't beleive that the up and down motion has much effect on toe. They attach about mid point of the frame rails and you have to bend them and also notch the rear sponson so they don't hit. Tom T also has them on his Contemporary.
I also agree with Jon go for the Wilwood brakes all around.
Cranky
