On the subject of gear swapping, it was pointed out that the (2003+) Corolla 5th gear has the following tooth count:
New 2003 Corolla 5th Driven gear has 29 teeth
New 2003 Corolla 5th gear has 40 teeth
29/40 = 0.725 ... for the 5th gear ratio.
That got me wondering what the stock 5th gear and...