The Nismo genuine tail lights are close to $1000 landed. The aftermarket copies are horrible and have not matched the pattern of the nismo lights and look poor as a result.
As for the eyelids, you can buy genuine ones from Nissan. The part number F2410-AA007 FIN-HEADLAMP SET (part number varies per color, that is for black).
As for aero mirrors, the only ones you want to get are Ganador's. Theyre a direct bolt on available in all standard Nissan colors as well as carbon fibre finish and retain all electrical functions. For those the best prices are Yahoo Auctions or Nengun - See www.slidewizeimports.com to help you buy it or www.nengun.com for Nenguns website.