Box design for Fi 18 sp4

[Low_4Life]

Hey guys I need a little help. I've done research on the web. They have a site where you put the QES and the frequency in an it says better sealed. But Idkk bout that. But anyway. I wanna port one. Wanna know if anyone has had an sp4 in both sealed then tried a ported . Ima put it in the back of my titan. Taking out the 60% seat. So ill have 24 w 40 h 22 d . That's all Max measurements. Wanting it tuned to 28 hz . Ima have a aq2200 then later get another an strap them. Any help would be greatly appreciated. Thanks.