Search:

A can of worms, Auto lockers are a compromise. Especially if driven on road.
When fitted to the rear they have a tendency to make the vehicle want to go straight ahead when under load, so you need...

40mm i would expect the Hiace runs a standard 8 inch rear diff and a 7.5inch front so a hilux rear locker and an IFS surf front should fit? If you have free wheeling hubs on the front you could drop...

Did my time in a 4WD Delica, held its own against Land rovers and 40 series Cruisers at the time. Would have been great set up as a camper.