I have for sale my custom sub box I built out of fiberglass. It does include the 8" sundown audio SA-8 version 2 dual 2 ohm sub and the PSI custom built passive radiator. I had the passive radiator built to specifically be run with this sub.
The enclosure is pure fiberglass ranging between 1/4"- 3/8" thick thought out the entire box. It is painted SWP to match my car. The passive radiator is tuned to 35 hz. It was recently painted so it is in great condition. I am going in a different direction with my sub stage so I need the money from this, I'm asking $600 but make me a reasonable offer and it's yours. I am also up for trades for anything that will fit my 2012 wrx sedan.