OK I finally got my steering arm off this past weekend. I also replaced the drag link and tie rod. I had replaced the pitman arm a few weeks ago, and since I didnt adjust the drag link, it would turn sharper one way than the other. It was kinda funny. But now I got it all together, with everything centered and straight.
As for anyone else wanting to replace their steering arm, I got the hardware at Harsh Terrain directly. I believe the hardware kit was 25 bucks. 3 studs, 3 nuts and 3 conical washers.
As I was removing parts, I kept the steering arm soaked with PB blaster. I loosened the nuts until they were almost off, creating a bowl at the top. I filled that with PB and left it overnight. The next day, it only took a couple light whacks to get the arm off. No heat or grinding needed. Ill try to get some pics up.