I have the custom sealed sub box and amp rack from my Audio set-up for a IS trunk.

Here it is in the car...
http://www.sounddomain.com/member_pa...JYBSYLAyBdMQ__

I have enclosed some shots out of the trunk. It is set up for a 10" sub that has a box attached to the frame, a amp, cap, and disc changer (exact parts are listed at the above link. But, it is easily adaptable! It looks like it came with the car.

It was built by a pro-stereo shop.

I am asking $300 (OBO) plus shipping (which I will have to figure out when you purchase it). I will also through in the dash kit for a after-market HU (not the one shown in the photos...that was before they made a kit for the IS).

 

Incase the link doesn't work, here is a shot of it when it was in my car!