The carbon nanos (4wm) are not sounded as good as the carbon mm3's did in previous vehicle. They're not going to work with custom a-pillars so I'm looking at alternatives and found these made-for-driver aluminium pods. I've watched a youtube video of another person using them and they're pleased with the sound but I'm having a hard time imagining a small, sealed metal ball working for a driver that was designed with larger airspace in mind. I pretty uninformed about these though so looking to see if anyone has used or heard them in the past.
Picture for reference

Picture for reference
