I rebuilt a 2002 42 or 43RE IIRC, about 2 years ago. I assume the trans in question is similar. FYI handle the overdrive carefully as the manual calls for an alignment tool to be used to prevent internals from being bumped/jarred out of alignment. Once that happens the alignment shaft tool, complete disassembly and a press will be required to realign things. I needed the tool for the rebuild and it was not available locally.... I removed, disassembled and cut up a similar trans for its tail shaft, not much fun (but I still have the tool and have not needed it since)