What class am I in?
Here's a lit of mods and where they put you. Bumping order goes like this:
GS -> STS -> STX -> DSP -> SM
except where noted. This means that a car with all GS mods and one SM mod is in SM.
Tires - DOT-legal tires with a treadwear of 140 or higher are okay for any class. DOT-legal tires with a rating lower than 140 are okay in any class except STS/STX. STS max width 225 on a 7.5" rim, STX max width 245 on an 8" rim.
Wheels - stock size and offset, GS. Any diameter up to 7.5" wide STS, up to 8" wide STX. Wider is DSP. Stock for your car - SVT wheels on a non-SVT are illegal in stock. Alloys on a car that came with steelies is okay if they were an option for your trim level.
Struts - GS
Springs (incl. coilovers) - STS
Poly suspension bushings/roll resistors - STS
Front swaybar - GS
Rear swaybar - STS
Unrestricted endlinks - STS
Strut tower bars - STS
Camber adjustment plates - STS
Subframe connectors (no lateral connections) - SM
Intake (no TB work) - STS. K&N drop-in GS.
Exhaust, cat-back - GS.
Y-pipe w/ stock cat - STS
Y-pipe with non-stock cat - STX
Headers (with any cat) - STX, (without) DSP.
Chip - STS.
3L - SM
Turbo/Supercharger - SM
LSD - STX
Clutch and or flywheel - DSP
Nitrous - not with the SCCA. You may be able to run if you take out the bottle, but ask the Regional Exec first. No bottles on site at all, even if you're spectating.
Brake pads - GS
Stock size rotors slotted/drilled - STS
Bigger brakes (any calipers) - STX, but NOT DSP.
SS hoses - STS
CF/Fiberclass hood - SM
Bodykitting - STS
Gauges, comfort and convenience items (no performance savings including any weight loss) - GS
Replace front seats with 15lb versions (not including hardware) - STS. Next year will be 25lbs with hardware.
Replace front seats with anything: DSP
Remove rear seats - SM
Battery relocation - STS
A/C removal - STS
If you have any questions about a mod I missed, ask away and I'll update. I'll probably organize them better soon too.
1995 V-6 5-speed parts car in great shape - PM me if you need anything.