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I dont know if F.A.S.T is the right class, Or should I be looking for Pure Stock now? What the differences?

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Pure Stock is basically just that.......The cars are supposed to be 100% pure stock with only blue printing to the engines, but there's a LOT of Creative Interpretation of the rules going on.....There are cars in the mid to low 11's now on bias tires.....

Basically FAST cars should be able to pass the visual tech of Pure Stock cars, but they're allowed to modify the insides of the engines while using all the Pure Stock parts........so you can bore and stroke them, port the heads and intake, use any camshaft as long as it sounds stock, modify the carburetor.......That's the gist of it......