I've just bought a bellhousing and gearbox for a similar application....the bellhousing is 1G ( 3T is more expensive and has the clutch setup on the drivers side ) and the gearbow is W55 I assume as it came out of a corona 83-85, also RA6x celicas and some crowns & supras ( 1G )
Check website...
www.4.tpgi.com.au/users/loats/technical/ma61/gearb oxes.html