Looking for a automatic 003 transmission for a 1974 project bus!

Im looking for a automatic transmission for a 1974 bus/kombi. Having a hard time finding someone to rebuild the one I have, or someone locally that might have either a good running used one or a rebuilt one I could purchase. If anyone has any imformation or has one I could check out please let me know. Thanks! Oh btw, it is a 003 automatic transmission.
Other than that progress is coming along on the bus, ive recently repainted the upper half of the bus gloss white, now going to be working on getting that sharp orange repainted. Also installed a couple new tires, brake lights, and windshield wipers. Going to be one sharp bus when im done with it. Will post pictures of progress.
Come on someone in here has to have some information! haha!