Thank you, I have sound deadened everything in the car other than the roof and have eliminated a great amount of rattles, the trunk could use a little more but, bass is louder in cabin than outside. Alternator has been upgraded from 90 to 143 amps. Big 3 upgrade was done. Stock battery, Voltage holds around 14.2 and drops to 12.6 on most aggressive hits and full power load, three amps being powered and ac and headlights running.
I am planning on getting the sundown sa-12 classics from yard sale. My current budget is about $300 for subs, less than $60 on custom made box, and about $200 for the amp(sia-1750d) that I am going to buy from yard sale when I upgrade to 0 gauge ofc. So budget is about $600 and I want to completely destroy my previous setup on the high end and get a little low end, and for such a low price I think the sa-12s might do that, last thing I need is help designing the box, I was going to do aero ports, but found out to get about 60" port volume the might not fit in the box. I have no space on the sides for ports and last box I built had very little output when I did that, I want to either do a slot port or aero in the center, I want the box to be 37.5" wide, 17.6" tall, and depth should be under like 25" no matter what. Box should be 35-36hz and 4.5 cubes, I will use 45s and any suggestions. This system will way even more than my current one so I will probably remove the space tire so I don't notice it lol.