Getrag 260/6 Trans rebuild

Does anyone know a place to get a complete diagram for a 260/6 5 speed gearbox?/ I have been unable toshift into reverse for over a week now, nothing broke I know of just suddenly wouldnt shift into reverse. I have all the other gears but having topush to back up is a royal pain.

Are you sure the Shift Tower mounts and Shift Coupling are okay???

Already fixed it, went towrecking yard and got one with only 29,000 miles on it for $100 with 90 day warranty