Should just be a pop and swap. The only other thing you need is THE SEARCH FUNCTION.
Look in the How-to section, there are like 3 manual hub swap How-to's. I don't have the manual hubs but I've heard of them blowing up. I just did the PVH override mod and haven't had any issues with 4x4. I think anything is better than the PVH system though, it completely sucks.