Hey, this place has aftermarket parts for Xterras, and their prices should be quite good. If you're looking to low-ball something, it might be worth checking out. I picked up a side mirror for my Civic for less than half the list price.
Anyway, the place is PartsChannel, and so far they carry a limited selection for the Xterra but they include the hood, fenders, bumper, turn signals, radiator, and A/C condenser, pretty much all you need for a front-end hit: complete list .
They have locations on both coasts and TX, including Kent, WA and Portland, OR: link .

Brent