There has been some discussion over the PPB about the 08 transmission in
the 08 STI.
Here is a look at the tranny parts from each model year.
First and Second Driven are new parts, as is 6th Drive. However the other side of 1st, 2nd, and 6th are UNCHANGED. So the ratio's must be the same as 07.
And here is a look at the tranny numbers for all of the US Spec WRXs and STIs.