Oh ok, Geuss thats why it was so hard tryin to figure out the right box and specs on it...
looks like i need to order about 4 more of these then
No you do not understand.
Ordering four more of those drivers will not get you any further.
All it will do is make it play a little louder, but not deeper. You can not make a sub from that driver however many you order.
For a sub you need a driver with an Fs of around 20 Hz, not 70 Hz.
You need a high xmax, preferably in excess of 20 mm.
If you want a ported sub, you need a Qts around 0.3 to 0.4. Around 0.35 is usually the sweet spot.
For sealed you need a Qts of 0.4 or over for best results.
Sub driver are expensive, and a good sub can not be built on the cheap.
If you are looking on parts Express you need to look under subwoofer drivers. Have a look at some of the Dayton drivers.
JL audio have a driver that is 8" and makes a decent sub, but it is expensive. However generally sub drivers need to be between 10" and 18"in diameter.
You have a lot to learn and a lot of research to do, before you are ready to build a sub.