[2MCHPWR]

stock class allows 1 sway bar to be replaced (either a front or a back but not both).
you can also increase diamter 1 inch (so i ditched the 17x9's in favor of 18x9's).
You can change the cat-back exhaust and air filter (air box must remain stock).
no other changes allowed in stock class.
Tires must be 160 treadwear but next year goes to 200.