Ok, I finally got her on board, then she pops the inevitable question... "Well, why don't you just get the used Infiniti [G35] that you wanted before? It's alot cheaper."

....check.

Pull the issue of warranty advantages with New Nissans, as well as current market appreciations with Japanese sport cars.

Idk...might work.

The warranty argument should work. Also throw in that G35s had quality control issues and cheap interiors. In the long run a new car is better. Maintenance on Infinitis is higher. Chicks usually don't know much about cars so you have a lot of ground to play with in changing her mind. If you sound convincing and direct she'll come around. If you sound meek and uncertain she will sense it and your goose is cooked.

Good luck with that. It's against Nissan's company policy to have vehicles imported from the States into Canada through dealerships so it'll take a lot of digging around, not to mention you'll probably void the warranty.