usually, imported vehicles are converted from left hand drive to right hand drive and sometimes conversions tend to have mistakes that could also lead to pricey repairs, however there are some lucky owners that are contented with their imported vehicles, like user testament11. As they say, it's better if you opt for original LHD vehicles, and mostly they are local.
If you still decided on imported vehicles, if i may suggest it would be the nissan elgrand, it has a big space yet it's very cheap because it's imported and converted.
i really dont know the steps in buying imp'd vehicles, since i haven't experienced driving/owning one, so maybe the steps in buying one would be coming from the owners of such vehicles.
if you don't mind sir, how much is your maximum budget ? a local pajero or nissan patrol might fit your budget or the ford expedition, or the ford escape as well.