I've been doing some digging in my spares, dismantling and cleaning up my spare gear shift mechanism. The set pictured has the three nylon cups that press into the ends of the fore and aft rods to push them on to the ball joints, plus the parts for the pivot sleeve on the gear lever. So it's all the bits before the bell crank that Kevin found and does not contain the bushes for the rods from the bell crank to the two levers coming out of the gearbox.
I checked my spare bell cranks. One is seized solid and the other has about 1mm of side play in it. The nut on the end is welded in place, hence the complete unit Kevin found, so it can't be dismantled and re-bushed.