The answer here is yes, we will just have to see if there are any of our Xterra's in your region. If not, we can deliver one to you for a fee.
There are contact details for support in the glove compartment and you have our contact info also. Don't worry, just take it easy, Pura vida as we say in Costa Rica, we can solve anything with a cool head.
If you are familiar with driving then you should be fine. While the roads can be a bit narrower here and the style of driving is a bit different, generally the roads are fairly simple. Take your time and note some variations from what you are familiar with, they are not necessarily wrong, just born and grown in a different environment, sometimes for good reason :)
You cannot take the vehicle across the border. However, if you are looking for an adventure into Nicaragua, Panama or other, just let us know and we can see if we can help put it together for you :)