Right, there are plenty of online dealers selling parts cheap. Mail order ahead of time.
Here is an example of an aftermarket thermostat that I won't use (for either domestic or import cars).
$6.04. Light duty construction, lack of jiggle valve and gasket (~$1.50).
http://info.rockauto.com/Stant/Detail.html?13758.jpg
However, they also offer an OE style, which if I have to I would try:
$11.51. Heavier duty construction, with jiggle valve and gasket.
http://www.rockauto.com/catalog/moreinfo.php?pk=1145694
This one looks close to the Kuzeh. I'm not sure if it's a rebox or not. But they can change supplier any time.