well said! I too would suggest a smaller woofer. Also go to some shows (if you haven't already) find some competitors that are using your car or close to it and check out what they have going on and their scores. Remember, sometimes bigger is NOT always better!!
Originally posted by SPL Creator:
Think about it, with an 18" BTL your gonna wanna go with a double wall enclosure, thats 1.5" thick all the way around, with the measurements you gave that gives you only 5.88 cu ft, thats before sub and port displacement, 5.62 after the sub displacement. If you go with any extra internal bracing, which you should have, the amount of space you have isn't really gonna be enough. Just cause the sub is an extra $50 doesn't mean it's the best option for your ride.