[strat61caster]

If there's a hole in SCCA classing for 86's I don't think it's between Street and Street Touring, a mild prep for STX doesn't break the bank at <$5k for 90% of the fun. Everybody knows it doesn't take long to put together a parts list for CS/DS that sails past $3k, it's not that much more expensive to switch to 17x9's and toss some alignment parts onto the car and get what you're missing from STX. Hell I hit $3.6k just chucking RPF1's, RE71R's, Koni's, and a pair of Eibach sways into the cart on Tirerack's website, add in an alignment and install time and you're over $4k then start thinking about a revalve on those Koni's (or Bilstein) to get them dialed in just right...

vs. a set of <$2k coilovers w/ camber plates and <$2k on 17x9 wheels and tires, ~$250 RLCA's, align and go. Add power when budget frees up, ~$1k for budget header and OFT and for the price of a prepped DS/CS car you've got yourself a basic STX prep to build on as time and funds allow.

Devil's advocate,
If there's a gap in classing it's above STX as the only place to go is SM, being able to compete with off the shelf FI without having to gut your car and cut the fenders to fit ~300 width slicks would be pretty cool for this chassis. You'd be looking at a ~$9k-$12k mod budget instead of a ~$20k budget (built engine, gutted, flared, slicks, drivetrain strengthening, tow vehicle and trailer etc.)

But that's a silly hypothesis, how many boosted 86's are there really? And those interested in autox are a minority of a minority, but just a nifty idea. Could keep it street legal too by using off the shelf CARB kits/tunes/approved tuners.

My only gripe about current classing is that "Street touring" is not street legal with the emissions equipment tampering, but that seems to only concern ~10% of SCCA's membership (if that) so I doubt that'll change anytime soon.