Sean's right, a 6" round port isn't going to breath as good as it may need it to. Unless port noise becomes an issue you're fine for now, don't think it's completely jacked. That's why he said if you ever rebuild it that you should give it more port area. The only problem with that is the box will become exponentially larger when the port area becomes larger so you may be stuck between a rock and a hard place in that little car if/when that times comes. So again, unless the port noise is so bad you can't stand it don't worry about it right now. Listen, enjoy and think about what you might do with it in the future. As for the enclosure itself, I think it's awesome. Very cleanly bulit, nice ideas on the bracing, and that stain just makes it pop. Sure, might not be the color others would choose but that's why you own it and not them, lol. I can't wait for you to get it installed and broken in. You think you love the sound now and it will just get better! The tuning will drop a little too when you finally invert the sub.