I found this catalog at work that sells transmission parts. Pretty decent diagrams inside of the SM 465, NP 205, 208, 241, and I didn't see the 203 but I'm sure its there. I've got one on the way to my house right now. I'm going to have to scan them when I get them. You guys will have to see it to believe it. You can get any part of the 4 speed and transfer cases from your local autozone if you have the right part number, I THINK. I'll investigate when I get the new catalog.