hey man i done mine in about 15 minutes minus the drying time of the gasket maker and i didn't use a pre-made gasket at all but yeah be careful not too over tighten the bolts cause you may crack the water neck and then it'* no good. tighten them both down a little at a time until tight and then give it about a 1/4 turn and you should be fine. that'* how i done mine 3 weeks ago and i haven't had any leaks yet. if it'* heat your wanting too prevent, be sure to use all weather anti-freeze, it'* thinner than water (be sure to use a 50/50 solution) and it disapates heat alot better, take of the engine cover off, and be sure to check the flu'* on your radiator for bugs and debris. also check it for any bends, if there is some mashed points in it, auto zone sells a radiator flu-comb. used properly this could help considerably depending on the condition of the radiator. flushing your system is a good habit atleast twice a year and taking your hoses off at every point they hook-up to the engine and cleaning the ports of corrosion will help also (ecspecialy were the heater hoses hook-up. Also check your hoses for stiffness, if their soft and dry wrotted then replace them. be sure they're not rubbing on anything also this shorten their life span. Do these thing and your ride should be a cool running one.

Talk about a highjacked post. LOL.

Sorry bro, did you get everything you needed?

what the 180 tstat does is that it opens at a lower temp (180*) and allows coolant to flow at that temp, supposedly keeping the engine running at a lower temp as long as everything else works. go to www.howstuffworks.com I think they have a page on car thermostats. They use wax to work, its pretty neat.

http://auto.howstuffworks.com/cooling-system8.htm That will explain how it works.