Getting ready to buy the Borgeson box

My car is a power steering car, actually had power steering, power disc brakes, air, am/fm radio, and a tuff wheel. Pretty optioned out for a Dart. I have a buddy that owns a speed shop and he priced me the box for $700 and the coupler for $125. What else do I need? Do you need to use the fast ratio idler and pitman arm like PST sells with this box?