What mods can you do and still stay in B-Stock

 

Anything available on the exact model and year of your car as standard or optional equipment, as installed on the factory assembly line (nothing available only dealer-installed is allowed), plus
Standard OEM identical replacement parts
Accessories, gauges, appearance, comfort, and convenience items (not replacement driver's seat, though) that basically don't help
Added roll bar or roll cage to spec (not required, though)
Driver harness (no cutting seats to install, though)
Trailer hitch and/or tow bar mountings
Any wheel of diameter and width identical to a stock or factory optional wheel, offset within +- 0.25 inch
Most street legal tires that will fit the mounted wheels and stock bodywork
Any shock absorber of the same type and mounting as original; no change to standard spring mountings is allowed; suspension geometry may not be altered; gas or hydraulic shocks are permitted
Any brake linings; pre-1992 cars may use solid/braided metal brake lines.
Any front anti-roll bar (no change to stock/optional rear anti-roll bar, if present)
Manufacturer specified ignition settings only
Any replacement air filter element (or removal of air filter element); no plumbing changes, however
Engine bored no more than .020"; no balancing or porting/polishing of head
Replacement of any part of the exhaust system past the catalytic converter (if quiet)
Any oil filter
Added clutch scattershield

 

Thanks Ike

 

the biggest improvement outside of yourself would be to get a set of DOT racing tires. The rest is just gravy

 

might have missed it in the list, but the third most important thing after tires for stock class is alignment.

the first most important thing to adjust is the nut behind the wheel, of course.

james

 

Why is the STi's index lower than the RX-8's? Doesn't really seem fair to me...

 

What class are you looking at?

Stock:
AS: .828 (STi)
BS: .826 (RX-8)

Here's a list of indexes: http://www.scca-chicago.com/solo/indexes/rtp2004.html

--kC