It's an 8 inch 4 lug open diff. I didn't check the ratio once I saw that. This was a V6 hatch car. Sadly the driver side mirror was already gone and the passengers side was mangled. I will tell you that my 17 year old son fell in love with the car though and now he wants one! I have to say that these cars were WAY underrated! I really like them. Too bad they were all cut up for front suspension pieces. I've got to believe that they were just the wrong car at the wrong time.