Just did a quick video today of my Zv3 12s playing Put On, this is the side firing box I just finished. Like I said it's nothing fancy but it pulls a 147.2 @ 49Hz and plays very well down past tuning (35Hz), maybe with the XS power battery upgrades and adding another run of 0awg OFC will help me get a little more out of her. This has been by far the most difficult car (figuring out what it likes Vs doesn't like) I have had next to my 89 Prelude from back in 1999.
(2) Sundown Audio Zv3 12s, Skar Audio SK4500.1 - YouTube
2017 Lexus ES350 SQL Project underway.