Hello, I just bought a 75 K5 and I think the t-case is bad. I dont know which one (203, 205, 208) it has in it but it has manual locing hubs and a th 350 transmission, 12 bolt rear dana 44 front, 35" tires, built 350 engine. I dont know the t-case pattern b/c I dont know which one it is, but I have tried all diffrent positions with no luck. I suspect its a 205 b/c it works fine in two wheel drive. My questions are: 1. which t-case is it? 2. If it needs replacing, which one should I use 203, 205, 208??? 3. What other parts will I need to swap t-cases with another model, are all NP's interchangable? 4. Is it easy to do, how long will it take assuming I am a decent mechanic and have nice tools? 5. Are special tools needed? Sorry for so many questions but I am ready to get this thing on the trails!! Thanks in advance for your help!