Ummmmm, measure your trunk?
The thing is, your woofer must match the box. One 12 in the right box, can sound 2x as loud as 2 12s in the wrong box. You should be able to look up the specs on the recommended enclosure type and volume for each woofer you are considering. You could for sure get 2 12s in a sealed box. Vented or bandpass... unlikely.
I know the Kicker Solo-baric are meant for small volume sealed boxes.