Thanks for the link. I have a question though, what will I use for the square port width and square port length 2? square port width is how wide your port is going to be. The port length 2 is the part of the port thake makes the 'L', change it and see where your tuning goes down on the bottom. Honestly, this program can be off (not by much though) sometimes. It's good if you just want to get an idea of what you want, but i'd just take the time to do the math and figure it out myself, just my opinion though. Thanks, I think I got it figured out.