good idea

not so much the box flexing as it is the steering box mount and surrounding area of the k-member. if you have yours out, look at how much distance there is from the box's mounting points to the pitman arm. thats a long ways. it should be easy to see how things can flex with so much space between those points. i think its a good idea for me because of the wide tires i'm running and the armstrong effort it takes to turn the wheels.