FYI - counterfeit airbags
 

Safety Advisory: NHTSA Alerting Consumers to Dangers of Counterfeit Air Bags | National Highway Traffic Safety Administration (NHTSA) . The Z isn't listed, but other Nissan models are (and frankly, they probably only bother to investigate/list mainstream models anyways). Be wary of those ebay airbags, or cheap deals from collision repair places...