I have a 85 PU with dual cases and standard gears in both cases. Thinking about going to 4.7 in rear because I have some leaks to deal with anyway. Some tranny and some case leaks. Nothing too bad but enough to drip in the garage. I am not a mechanic but can perform most tasks if guided. Can you direct me to any links for general trans/case removal threads. I have seen the info on changing to 4.7 once the cases are out. I figue I have to replace all the seals and try to find the tranny leak as well. Thanks in advance.