Hey guys, I’m new to the forum and was hoping I could get some help or suggestions. I currently own a 2019 Dodge Charger. I’m running 2 Soundstream T5 12’s on DC 3.5k. I have a 220 amp alternator, XS XP 3000 secondary battery, 0 gauge power and ground and the big 3 upgrade. I recently got 2 Sundown X15’s in a trade for some stuff and was thinking about running them, or at least 1 of them. My current setup not bad, but I want more bass. The box I have right now is only 1.5ft3 per sub and it’s sealed. So my question is, would I be better to get a custom ported box built for the Soundstream 12’s or get a custom box built and run 1 of the Sundown 15’s. My 12’s are dual 4 ohm so I have them wired to 1 ohm. The 15 is dual 2 ohm so I could also wire it to 1 ohm. Sorry for the long post LoL.