Wet sounds sub 6 1/2″

Does anyone have the wet sounds ss 65 subwoofer? It’s a 6 1/2" stealth series sub. Or has anyone heard one? Can’t find any reviews about it. It only requires 8x8x9" deep box. My thoughts was to use a 6" pvc cap with a coupling and pipe to get the 9" depth and pack with poly fill and mount under the dash on the drives side. I don’t want the ssv.