NIghtshade v.2 12's - box design

[KRS]

So I got a pair of Sundown Audio Nightshade v.2 12's and need help designing 2 different boxes, on with low tuning (30-31) and one with bass race tuning (35-36).

I'm not so good with boxes so that's why I'm asking.

Thanks. //Sunwdark @ LMProductions09