I want to change the gearbox oil in my 1998 Impreza Type-R (with centre diff) . i put the car on a lift yesterday and seen the bung on the bottom of the gearbox to let the old oil out ,that was no problem ,but i could not see an obvious place to put the oil back into the gearbox ,is there a bung or something on the side of the box that i should fill the oil up to it's level after letting the old oil out?