hey mate
to get that box out do the following
-undo all the bolts that hold the tailshaft in (4 at the diff, 2 in middle)
-tailshaft will slide out of the gearbox
-a small amoutn of oil may come out, expect alot more when you tip the box, either plug tailshaft hole, or get ready with a bucket.
-take out the gearstick from inside the car
-take out the speedo cable
-take out all the bolts that hold teh box to the engine
-take off clutch slave
-undo gearbox crossmember bolts
time to rip the box out! the box must come back about 20cm. then it will come down.
get ready for the oil!