Voyager 1 and Voyager 2 are identical, as are their computers. JPL's Voyager documentation is the property of Caltech, not NASA, and are thus not available via

Voyager 1 and Voyager 2 are identical, as are their computers. JPL's Voyager documentation is the property of Caltech, not NASA, and are thus not available via FOIA. People have gotten copies of selected documentation by requesting them from libraries that have copies of the original documents on file.