I am not much of a mechanic or anything, i love the look of old muscle cars and I like to drive them. I see guys talking about the 180 tstat which I assume is a thermastat of some sort. A lot of people seem to be making this change so i was wondering what exactly it does as far as "upgrading" the cars performance. Sorry for what is probably a simple question for you mechanicly inclined folks, I am still trying to learn all this stuff lol. Thanks for any responses.