Lol, i figured you fegs wouldnt like the diamonds. When i ordered them i thought the only thing in diamonds was the ipipe logo, when i opened the box i was surprised. Its a hit with my black friends though. I can remove the diamond strips around the sub and its just black there.
I called audiopipe and asked a tech what the difference was and he told me that and that they had improved on the sub with those 2 things, guess he was bullshitting. These were actually cheaper than the originals, though.
I forget the port measurements, i think 12x7.5x18. Ill have to double check. I remember it was like 18" per cube though.
Edit - thats right. 130" of port.