STi stock is in A-stock, but I didn't get a chance to look at the allowable mods to stay in stock for SCCA.
Matt: do you know off the top of your head?
You can change:
- wheels (same size/width as stock)
- tires (same as stock, 140 wear rating for street tire?)
- some shock aborbers allowed
- air filter
- front sway bar
- change fluids i.e. Mobil 1, Shockproof
- brake pads
- what else?
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