sundown x-12 d4 box help

[Novak]

I was wanting to upgrade from 2 e8v3 on a mrxm100 alpine mono so I looked around and noticed sundown had a new sub line the x series

I saw the price and I ordered it

so I have the sundown x-12 d4 and I went to look up some specs, now my problem is I don't know where to start with the box

I know ill tune to mid 30s so like 33 or 35hz but as for the size of the box no idea

I have built boxes for many set ups but not one with a sub like this

[Novak]

specs are

re------3.7 ohm

fs------24.35

qes---.37

qms---4.38

qts----.35

le------3.76mH

sd-----457cm^2

vas---38.02L

bl-----22.35 na

mms-333g

cms--127 um/n

sens-83.35 db

1250 rms