Owner of 1998 Pajero swapped with 3UZ.
Finding a fully maintained SUV, that too thirty years old will be extremely difficult.
Parts are not easily available and you need to be half mechanic to get it's maintenance done properly.
Average of 14km/L is not possible. Max 10km/l that too for diesel manual.
But if you are ready to accept the challenge then once properly maintained it won't need frequent visits to mechanic. It is very comfortable and fun to drive.