a nitrous kit itself does not determine if your car will blow up or no, its all the driver ive successfuly used NX on my previous Miata for over a year (on the street and the strip). no plans to put a kit in the crossfire... yet.

i checked out www.nitrousexpress.com but couldnt find a specific kit for the xfire.. which isnt uncommon. write them an email and ask which they would prefer. good luck. do some research before you gas it!