Ok let me see if I have this straight, you are going to be bumpin 2400 watts minimum, ok thats fine. Well, ok heres the deal if your gonnaa be puttin in that sort of system then use one cap, but leave extra power wire just in case your lights start dimming when you turn it up.
If that happens, then install another cap but heres the thing, caps are mostly meant for providing the amp with the sudden burst of power when a big bass hit comes along so, that is something to consider. If your ever are thinking of upgrading your system I would look into a high output alternator or battery, here are some ideas on that:
http://www.sonicelectronix.com/item_7344_Kinetik+HC+2400.html for the battery
and look up
http://stores.ebay.com/Iraggi-Alternator-and-Electronics ....for the alternators.
Also, porting, well the difference between a ported box and an enclosed box is that a ported box gives the bass a little meaner hit while the enclosed box gives it a well rounded clean hit... dont worry, if you dont port your box nothing should rip. Im hitting 4600 watts out of my box and its not ported.
it also depends on the size of the box, if its a big one, you might want to port it but if its a little smaller there wont be much of a difference...when it comes to ports though there are ups and downs, with sealed boxes they hit hardand clean and there really is no prob, with a ported box you need to take more time to tune the box to find the hit you want. personally when it comes to round or other ports the only real difference that I see is the area of the hole. so do whatcha like, I hope Ive answered all your questions, if not then just post something else and ill respond to it, I check the site at least once a day so youll get a response soon.
Make it Bump man!!