Single DC lvl 4 box port dimensions

[psx2p]

Im kind of lost on designing a box for a single 12 (DC lvl4)

Im messing around with Torres box calculator and I came up with the following box dimensions:

H 14.5

W 25.5

D 10

With that info can anyone tell me how I should make the Port to achieve around 37hz and tell me if the dimensions are on track to get the 1.5ft suggested box volume?

Or if you can think of a better design I am all ears.

This will be going in a 01 sonoma ext cab.

Subs specs

[psx2p]

After playing with numbers and doing some reading I think I have a good Idea as to how to build it.

I am deciding between a single Aero port which wouldnt be its own length from the back of the box which I heard was bad or 2 smaller ports which give me more volume than DC suggests.

Single

THIS ONE

Dual Ports

THESE

The specs are as follows

(single port)

Dual Ports, Gives me more than the suggested ported box volume DC recommends (is this a problem?) but puts me at damn near 40hz with enough room from the ports to the back wall.

Any input is appreciated.