JerryLZ

As the title says I have (2) E series 12's right now in a ported box. I have a F150 crew cab now so I need to design a box and I'll have to run 8s. My question is, What differences can I expect to see going from my current subs to 2 X8's in a proper box? I plan to run them off a SCV2k which I already own. I would imagine they would be immensely louder but then I see a lot of comments about cone area etc etc. I don't know anybody personally who has sundowns so I was hoping somebody who is familiar with the sundown line up might be able to chime in before I pull the trigger and buy everything. Also, I could use some help on finding my box volume and proper port size if anybody wanted to help with that