I would Prefer The Image Dynamics IDMAX-D12, Great SQ as well as great SPL. It need minimal space. Smallest can be 0.8 cu ft. to my knowledge. Crisp Sounding in the right box. Great Xmax and delivers far more power than what it take. This sub is somewhat underrated, my brother in law pushed this with a 1200.1, sounded great.
SPL You say - Perhaps a MMats Juggernaut will do the trick for you, but due to your lack of space, perhaps this sub will not fit the criteria. I also like the taste of the Perfects. I really cant recommend alot for you due to the fact that you have minimal space in your ranger.
Good luck to ya