[Yahooligan]

He is wrong. All 6 speeds will have the 3.90 rear!

Close.

6-speed + 20" wheels = 3.92
6-speed + 18" wheels = 3.73

Now, no more 18" wheels would mean that all future 6-speeds would only have 3.92, but in general having a 6-speed doesn't guarantee the car has 3.92. Just trying to make sure someone doesn't come along and assume that pre-2015 6-speeds all have 3.92.