There are several different ways to wire your subs, no I'm not going to talk about series or parallel, or ohms, information on how they should be wired can be found here. The main problem you will face is how to get power to the subs once they're in a sealed box. Most pre made boxes have a connected you simply connect your wires to. But if you didn't plan to have something like that, it won't be very easy to install one now. (If you would like a little pod to wire into look at step 7 about obstructions). Other than a simple pod another easy way it to just drill a hole and stick the wires through sealing them up afterwards. There are also other connectors which go through the fiberglass, and connect on the other side, it is really up to you, just remember the holes must be air tight.