AH! My mistake. Getting to the thermostat is quite a pain in the tuckus. It was tough getting to it on the spare engine that I am tearing down. Let me know if you need any pictures of parts of the engine before you dive in. I recently replace the knock sensor on my engine and that was a bit of a chore.
Good luck!
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless