You need to ensure PCD, stud #, offset (et) and wheel width are all ok for the 350z.
Buying off eBay isn't an issue. And despite what Will says above, the majority of wheels are made in China or Taiwan, or any other number of countries that people make fun of. It doesn't mean they are crap.
Pisses me off when people over generalise like that. Casual racism at it's most convenient.