Re: 337 - SCCA Classification? (caper2874)
Your car will definately fit into the stock class as long as you don't modify it too much. Get a copy of the rules to see exactly.
Mostly, for stock class you have to use wheels of the same diameter and width (with the 337 that's 18"x7.5"), stock springs, stock rear sway bar, any cat-back exhaust that meets any noise restriction the club has, and any intake filters (I think). Any shocks can be used as long as the stock ride height and springs are used. Front sway bar can be changed. No strut tower braces. No non-stock intake and exhaust manifolds. No chips! Any brake pads, but no changes in disks or calipers.
If you change any of the "not permitted" items this bumps you up to Street Prepared class unless you go into Street Touring class which I haven't learned the rules for yet. More suspension, tire/wheel sizes and engine modifications are allowed though.
By the way, the GTI 337 usually goes into the G Stock class.