I have an Aussie Locker installed and yes, you will need manual locking hubs in order to drive it on a solid surface.

If you have a Mitsu air-locking rear axle you cannot use an aftermarket (ARB) air pump to operate it - it provides way too much pressure. The factory air locker operates on something like 6 psi and the ARB is something like 60 psi - if you can regulate the ARB down to that point you might be okay but using the factory locker pump is a much safer option.

95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes