Just asking a question here: Couldn't you consider the steering system on a rack-n-pinion steering system part of the suspension? The tie rod is a link in the suspension and it's connected to the rack which is connected to the K member with bushings. And since suspension bushings are free in IT then couldn't you take it to the point where you can use offset bushing to try to correct bump steer? Dicuss.

I owned and raced a Fox Mustang and know the issues of bump steer. I didn't race it in IT so I was able to correct it using the more common heim joints in lew of tie rod ends method rather then offset rack bushings.