k... if ur still looking, i can do do the deaign for your for a fee of $25 paypal'd.. that will give you a few sketchup pics of your design as well as a list of what you need to get cut.. pm me the following info if you want
1. what vehicle
2. any specific port orientation?
3. what kinna power are you throwing at them?
4. any specific tuning range?
5. spl or daily?
some pics of my 4th order single 15"..
peaked at 31hz with nice bandwidth of 25-50hz