Please contact Josh at http://www.facebook.com/#!/josh.w.hart or http://www.facebook.com/#!/groups/449888281732464/ and PLEASE tell him I sent you! He is truely a great guy to deal with. I was sent to him from Duran. He responds very fast, and is easy to deal with. He has just finished up my design for my 18" SSA Evil and really went above and beyond my expectiations. This is not just any ordinary designer who build an enclosure around your limited space. He actually aims for your goals and utilizes your intended goals into every aspect of the enclosure. When you message him, I would suggest to include any additional information that you may think that could help the design process. For example, I told specifically what frequency range I am really concnerned with or what response I am looking for. I told the characteristics of my vehicle, genre of music I listen to, the amount of power utilized, etc! Here are the results of my enclosure. 8.3 cuft Net tuned to 33hz 128cuin of port Pictures!