Sara,
First off, welcome, and thanks for your interest in SCCA and our region. Yes, a bone stock 2004 Acura RSX Type S is a G Street car (or at least it was as of last year and I don't think it's changed).
Everything Jay said WRT numbers and registration was true for last year, but we're actually looking at changing things up a little bit starting this year. There's no way he could have known this as it was a discussion at last Tuesday's board meeting. We're going to (if at all reasonably possible) allow duplicate car numbers for cars in different classes starting this year. No guarantees as of yet, but that's what we're shooting for. We're counting on a few things to happen in order to allow for this. A couple of those things we're counting on are that the additional cross training we did last season for timing and scoring and also for registration will pay off and we'll have more people better capable to handle the inevitable confusing situations that duplicate numbers will create. We're also going to be counting on corner workers doing a more consistently good job of following proper radio protocol and calling in cones and DNFs with complete car and driver identification info rather than "The red Porsche hit a cone. I don't know the class, but I think it's number had a 3 in it."
Anyhow, how does this relate to you? At this point, probably very little. I appreciate you wanting to get clings (or better yet magnetic, in my opinion), but I recommend you come out and drive in an event or two before you spend money on stuff like that. Decide if Solo is something you want to continue to do, first. If you get addicted like the rest of us, you'll then have that much better of an idea of what all kind of equipment you want. For those first couple of events, just use contrasting tape and label both sides of the car clearly and you'll be fine.
The first event is more than a month away. I've applied for SCCA sanctions for all of the events for the year, but until they're approved, we're not going to setup the event in motorsportreg.com. Also, Matt and Paul and I are going to be doing a training night where we teach each other how to setup all the software and data for the entire season and for individual events. Once the event is setup and opened for preregistration, we'll release the hounds and make the announcement that preregistration is open both here and on Facebook.
BTW, if there are any non stock things about your car, let us know and we can help ensure that you get classed properly. Thanks. It's better to figure that stuff out now, rather than in a panic on the day of your first event.
Scott