I'm sure Nissan will honor warranty. You need to add 6% duty, 7% GST on top of the converted price. In addition, you won't be able to finance so you will need to arrange your own financing here. Likely the only way would be to get a secured line of credit. I highly doubt any company would loan money to purchase an out of country vehicle. So basically you'd go down, buy it, drive it to the border. At the border you'd declare the value, pay the duty and taxes and come accross. Get a 10 day trip permit, you'd have to complete a safety. As stated above, follow the RIV. I would advise purchasing a 2005 X_terra if buy in the US for HUGE savings over one in Canada. Buy in NY State, Buffalo. Dealers there probably know exactly what to do.