Thanks for your response. I cannot put the z speed undertray on because I race in a spec Z class and its not allowed.
I cannot find rear bumper covers on ebay for $150. You can find them, but then they want to charge you $100 shipping. And most at that price say damaged, scratched etc. I can get a new one from Nissan for about $280. I cannot put any aftermarket fascias on either because of the rules, just the OEM or Nismo. I also sometimes trust people in the forums more than ebay.