Having stripped three LT77's so far (one C suffix SD1, one H Suffix Disco and one E suffix Defender), one two tools that have been the must have were the slitting disc on the angle grinder (when a component can be sacrificed for the good of the other parts within the box, spacers and nuts being a good one!) and the Sykes Pickavant Hydraulic Bearing Pulling kit that I borrowed from work, if it wasn't for the later tooling in particular I would have never got any of the boxes apart as the interference fits on some of the components is ludicrace. If you are going to rebuild it, find another cheap box and use it as a sacrificial goat and try and save as much of it as spares.