Hi All I have just bought an overdrive gearbox for my 1972 MGB. I was wanting to overhaul the box before installing it in my car. Do I need any special tools is there any trickey problems that I might come across. Is it a job that should be left to a workshop or is it possible to do myself. I do enjoy working on my B so if possible would like to rebuild it by myself. But am worried that it might be too hard. Any one rebuilt one. All help and suggestions welcome. Kind Regards John