Found it..sorry for taking up space

Stock (S)

These cars are fairly close to cars that are driven on the street, and are usually dual purpose automobiles. Permitted modifications include any DOT-approved tire, any shock that attaches to the stock mounting points, any exhaust from the catalytic converter back (subject potentially to local sound control), any brake pads, any front sway bar, any wheels of stock dimensions and offset, and addition of a race harness.
Cars prepared to Road Racing Showroom Stock rules are permitted to run in Stock, but are not permitted to "mix" rules between the two classes.

The stock class is split up into sub-classes organized by performance. They are lettered A thru H, in an approximate order of descending performance. There is also a class called Super Stock (SS). Examples of cars in A-Stock (AS) include: Porsche 911's, Turbo MR2's, etc. The most populated class appears to be C-Stock (CS), which includes Miatas and many BMW's. At other end of the spectrum, H-Stock (HS) includes cars with relatively low power-to-weight ratios like the Toyota Tercel and Honda Accord. F-stock is a class that is generally populated with the "pony cars" such as Camaros, Firebirds, and Mustangs.


Street Touring (ST)

This is a new category of street cars modified more broadly than allowed by Street Prepared rules. It includes 4-seater sedans with specific displacement limits, aimed at cars modified using common suspension, engine, and appearance parts which are fully legal and compatible with street use anywhere in the country. Street Tires are required (DOT wear rating of 140 or better).

Street Prepared (SP)

Street Prepared cars are allowed significant modifications over stock, but many are still dual-purpose cars. Some of the permitted modifications are: any legal modification in stock; any springs that fit stock attachements; any sway bars; any wheels & DOT-approved tires; any induction for the engine (except that cars that were originally normally aspirated must remain normally aspirated); and any exhaust including headers. Compression ratio and camshafts in the engine must remain stock.
Cars prepared to Road Racing Improved Touring and American Sedan rules are permitted to run in Street Prepared, but as with Showroom Stock, rules "mixing" is strictly prohibited.


Prepared (P)

Prepared cars are allowed very substantial modifications; Prepared cars are rarely licensed for street use. Interiors may be gutted, cams and pistons are free, and suspensions may be significantly modified.
Cars prepared to Road Racing GT and Production rules are permitted to run in Prepared.

Street Modified (SM)

Street Modified is a new category for streetable cars modified beyond Street Prepared allowances. The rules are simple, and almost anything goes. Cars must be legally registered for the street

Modified (M)

The Modified category is split into parts. A, B, and C Modified consist of purpose-built racing cars, usually Formula Cars, Sports Racers, or "Specials". Usually these are open-wheel, single-seat cars without fenders.

D and E Modified are for very heavily modified production cars. In these classes, basically anything goes except that you must retain the original floorpan and driveline layout (a front-engined car cannot become a rear-engined car). D Modified is for cars with engines less than 2 liters, and E Modified is for cars with engines greater than 2 liters.


Ladies (L)

Most clubs offer a separate class in which women can compete in addition to the overall competition. This is signified by the letter L being added to the classification on the car. For example, CSP-L.

Street Tire (ST)

Many clubs offer a separate class in which cars fitted with street tires (as opposed to Racing based, or R- tires) can compete in addition to the overall competition. Cars from any, or at least most, open classes compete together and their times are handicapped using some indexing scheme. A common index is the RTP/PAX index, and this sort of indexing is sometimes called PAXing. This is signified by the letter ST being added to the classification on the car. For example, CSP-ST.
Novice (N) aka Rookie (R)
Again, most clubs offer a separate class in which newcomers can compete in addition to the overall competition. This is signified by the letter N being added to the classification on the car. For example, FS-N. Most clubs also rank the novices' driving performance using a handicap-like system that tries to account for differences in car performance.

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I plan on running stock or street touring..

Any suggestions?





[Modified by jin_, 4:04 PM 11/1/2002]