Filler is on front of gearbox, you'll have to remove the cover under the front bumper to get access to it.
Drain bung is on side casing on the passenger side of the gearbox
1983 Trueno Ae86 ( project), 92 HSV Clubbie. 2000 Fielder wagon
Many previously owned projects: 94 Hilux 4WD, 92 VP SS commodore, AE85 notchback, Ae85 rolling shell, Ke35 sr coupe, EP82 turb starlet