Ok. Called Greg and he sent me a replacement steering box. THANKS @VSpyder! I decided to install it myself this morning. It was a bear, but after a lot of blood, sweat and swearing, it's DONE! BTW, the hardest thing was getting the Pitman arm off and on: that pinchbolt required an 18-inch breaker bar to get off. Still, all is good.
Greg mentioned that I'd have to readjust the steering wheel. So I got a 7/8 socket (as Greg instructed), and now I'm headed to tackle that little adjustment tomorrow.
I'll update as I progress.