I agree, Ramcharger. They aren't handing out the info. They do speak in the "lingo" of their category, for sure. When I was a teenager (I'm 49) my neighbor raced in Stock Elim. I later worked for the guy I mentioned b4 who ran the U/SA car. He was a partner in my neighbor's car before that. I partnered with him on a car in the 90's! (Clear as mud?) Anyway, I've been lucky enough to be around a lot of Stocker's. While it's cool getting as much as you can out of stock parts, the definition of "stock" has been stretched a bit over the years. IMO, it's been because of parts availability and, well, I don't think I'll go further. But I will say that it's neat racing other cars w/ the same rules. You can tell whose better. Getting to know racer's is the best way to learn. It's a fraternity, to say the least. The car you own is usually not the best car to race. Sifting through the classification guide for an odd combo, not going too fast w/ it, and picking a class where you stand a chance if you have to run heads up (unless you're the fastest, which is unbelievably expensive.), is the key.