There are a few jobs that need doing to the gearbox before it is fitted to the engine block.
Firstly the pin to which the clutch actuator arm connects, needs to be replaced with the longer one supplied by GBS. This is a very simple procedure of knocking out the old one from the rear and tapping the new home into place with a wooden drift.
Next there is the fitting of the quick shift gear lever. Again a simple job. The linkage is held together by pin secured by a rubber washer and the mounting bracket by bolts to the gearbox housing (torgued to 45nm and threadlocked). Just need to make sure that the collar on the universal joint is adjusted so that all gears can be selected before everything is tightened up.