The guy advertised it as a Garrett T3/T4 turbo which could be used on the Nissan SR20DET motor with no modding. This is why I bought it, as a gift for my husband to use on his newly built SR20DET. It came in the mail today, and it is definately NOT a T3/T4. It has a T3 flange which I guess lead this genius to believe it was a T3/T4. The fact is...it's made by AiResearch company. Model number is M11. I know the '87-'88 Ford T-bird TC's used these...so I'm assuming this may be what it came off. Not 100% though.