I recently bought a 3/4 ton parts truck for a song. I got the D44 front, 14bff rear with gov loc, sm465, and np205 transfer case. This stuff will be behind a 350hp 350sbc motor. It will be a while before I can actually install any of this stuff so I have all winter to tinker with it. I want to start with the tranny and transfer case cleaning the grease and rust off the outside and painting it. I was also planning on draining the fluid and replacing it. I got to thinking that it may be pretty cruddy in there. What is the recommended procedure for cleaning the inside of a manual tranny, transfer case, and diferentials? I was gonna use engine cleaner for the grease and a wire wheel for the rust on the outside.