The answer to your question is whether the tie rod installed on top will have enough clearance when the springs are compressed to the bump stops. Also if you're comfortable with the road clearance with the tie rod mounted below the steering arms. One consideration is whether in the extremely remote chance that the cotter pin comes out and the nut loosens up that gravity will make the tie rod fall off on the road. Mounted on top, gravity would work in your favor, on the bottom, not so much. (I did say extremely remote.)
