15 BTL in s10

[Hostility]

going to pick up a 15" BTL, going to run off a saz 2k at .5 ohm, from what i have tested, subs forward sounds louder, port.. not to sure, ive done port up in middle along back wall and worked alright, ive tried port up drivers side didnt really like it to to much, what do you guys suggest? also what size box should i put it in? i was thinking 3.5 cubes. i listen to everything when it comes to music, i really slam it on low songs 28hz-35hz songs, but i always want it to sound accurate on normal everyday songs and not slow and sloppy, is that possible? ive had 2 15 NS in my truck at 31hz and was awesome on lows but not so great on other music. im all ears for some suggestions.