A year or two ago I had a box made by the local shop, I asked them to build it the specs of IA for the LI 15 but I'm doubtful they did so? The port looked and always seemed too small, it doesn't have any L shap as far as the port goes its just straight back and seems too slim...how would I measure the port to see the tuning and determine the total cubic feet? Also by first glance, does anyone think something is wrong here with the port....when I see most other builds by specs they all look a lot bigger...shady shops, only in it for the money smh.. I'll upload some more pictures tomorrow for a better look...