Does anyone know where I can get something like this for less money?
http://www.mooneyesusa.com/small-water-temp-gauge-p-578.html

Maybe I'm just being cheap, but it seems I should be able to get a decent one for less than $40.

That price doesn't look bad compared to some others I saw. I couldn't find any pricing on this web site, but they do have a selection;

http://www.marshallinstruments.com/catalog/cat4.cfm

Larry

How about these?

http://www.summitracing.com/search/Brand...s/?autoview=sku

Thanks for the help guys.

I am going to email marshall instruments. I hadn't thought about the temp radiator cap. What PSI should I use if I go that route?

I'll have one inside the car, just thought it would be nice to have a way to double check it.

I would go with whatever pressure rating the factory suggests, unless you have replaced the radiator and the heater core with ones that tollerate higher pressures. (but that's me).