How to replace Atlas O rail car couplers?

The same reason that I took all those Atlas O "scale" couplers off, and threw into the trash! I replaced everything with Kadee #805 assemblies.

I think you can remove the brake pipe from the bottom of the car before removing the coupler box cover. Atlas sells a replacement coupler (Part #7057) to fit that box. From the picture it is the new version and Atlas says it's a stronger design.

I had switched some Atlas cars over to "transition cars" and broke a coupler yesterday at the club. I'm going to bite the bullet and drill/tap the cars for Kadees.

Thanks guys as always for the quick answers. I'll see if I can remove the brake pipe.

I might switch to the Kadee #805 as suggested. Is that pretty easy to do?

Chuck