Actually Chris, in other parts of the world, the Spyder came with a 6 speed manual gear box.
As for your question
Spyderwoman, the swap would be direct, assuming you already have a manual transmission car and you're using a transmission from a Spyder. If you'd like to use a 6 speed transaxle from a Corolla/Celica/Matrix/Vibe, you need to machine the shift tab to make it work, as the piece is designed for a front engined vehicle- not mid. These parts might slightly vary in gear ratio, though. Your best bet is to buy a 6 speed transaxle from a crashed Spyder
