Let me take this one till PHAT can get with you. First off a rack is used on late model cars because it is cheaper, not better. When you put it on the axle, your steering column connection is a nightmare and to do it right would require a shaft from the rack, back about 2 feet to a universal joint at the end of the leaf spring. Anything short of this is incorrect and componants fight against one and other.
If the rack is mounted to the frame (UG!) the "tie rod" ends are too short and you will have bump steer. It is just plain WRONG, and why people do it is beyond me. With all the proof, and articles in magazines and such, I can't believe it is still done.
