How will this sound in a cherokee

Anonymous	Posted on Monday, December 13, 2004 - 18:12 GMT since a cherokee's trunk and passenger room are not divided by a seat or anything, would 1 12" be good enough or would two 12"s really make a diff. also how do you go about measuring spl. like do u pop in any cd or what?
Anonymous	Posted on Monday, December 13, 2004 - 18:24 GMT or should i get one 15" svc 2ohm subs