I hope you finally get it. I may dispute my purchase also, since I emailed and called again with no response. They have had my money the whole time. Maybe we need to start our own business making them. Definitely a demand for them.
Hits hard! Ported boxes are generally louder then sealed for sure. Have you tried facing the speaker towards the rear glass? You may get a few decibels more from the reflection of the sound waves.
Interesting that different dealerships say and charge different prices. I took mine into a Las Vegas dealership for the recall and they did mine for no charge.