I personally feel that the stock twin turbo 3S's should be an F stock car. The car is classed as A stock, and is outclassed by Porsche Carreas, and non ZO6 Vettes. This car is closer to newer firebirds, and Z28's, and they are classed in F stock, and fast times are very close to A stock. ZO6 vettes are classified in SS(super stock), and dominate the class. Any DOT tire(a few exceptions) is legal in the stock classes. If you have any engine upgrades, you will be classed as a SM(street modified) car, and that is the class I run in. Again, any DOT tire is legal, and you will need sticky tires to be competitive, engine modifications are unlimited, and any suspension as long as it is attached to stock mounting points. I am running a stock suspension, and I am running about 2 seconds slow to be competitive in AS, FS, or SM(very close times for all 3 classes...so far), but I don't consider myself a real good driver. The SM class has a lot of potential to beat most of the fast prepared and modified classed (full race slicks, full race suspension) cars, it is just going to take a couple of years to figure out how to hook all of the drag race horsepower up to a tight autoX course.
Ray
3 SI member 1222