Great job Pete! Just what anybody wanting to get into 3RS needs to know about converting Atlas cars to Kadee.
However, one thing that I have descovered about Atlas cars is; those two screw mounting holes for the Kadee coupler box are not quite located correctly. You will notice that the Kadee coupler & box stick out past the end sill of the car. Thus, I have been drilling new mounting holes on all my Atlas cars so that the coupler box is flush with the car end sill. Never figured out why Atlas does that!