Audio Realm

Hey guys, I'm new to this forum and I need some help with my enclosure, I jus bought two audiopipe q12 subwoofers, but I'm not sure about the tuning of the enclosure. I'm also using a epicenter, reason for the epicenter I have a epicenter competition in the next two weeks. My dimensoin are width 40 × height 16 × depth 19, I also have a 20hz chip and the 33hz chip. How can I be a winner!!!