Thank you for look at my starion TDO5-12A turbo charger.  It is over the later model Starion 87-89. This turbo is brand new with 0 miles! It will include paperwork with showing it is in perfect working order from turbochargers.com.   That means it’s a real Garret turbo and certainly not a Chinese knockoff.  The only part it might need is a compressor housing 0 ring (large 0 ring on compressor housing, very inexpensive).  It was for a project that never got done.  My loss is your gain.  Please email me if you have any questions and I will get back to you promptly.