This is the type of thing you have to try to see. Keep in mind that an IB setup depends solely on the suspension of the woofer to control it's movement. A woofer that lacks a stiff suspension will flap uncontrollably and eventually self-destruct. That particulat driver seems to be pretty well built so like I said you will just have to try it and see how the cone behaves. I am assuming you are talking about mounting it in your rear deck.
Let us know how it goes, that is one of the most interesting and unique drivers out there right now and I am curious as to how they sound. Just don't expect it to hit the lows very well in an IB config.