Remove the starter motor, disconnect the driveshafts from the diff (6 rather tricky allen head bolts on each shaft), unbolt the gearshift linkage and unbolt the clutch slave cylinder from the actuator arm and the casing (support it like you would a brake caliper for the same reasons), disconnect the arm that joins the gearbox to the exhaust then unbolt the gearbox from the engine block. It should basically fall off then unless the clutch has seized onto the flywheel (not unheard of). Make sure that it really is unbolted all around the bellhousing as some of those bolts can be hard to locate.