The name's Tim [] and your welcome. I didn't actually take the pictures... I was looking for car audio applications for a TC Sounds sub - turns out they have a pretty big car audio following too.
I plan on doing the upgrade. $120 (after shipping) is a great deal on that driver. I am going to use the old one in a DIY tube.
I have the 12.1 so I hope the difference is at least noticable.