WipeOutXXL

I am interested in putting a rollcage into my car and I already took out the back seats along with the seatbelts and am looking for a Delete Kit. My buddy has it for his Cobra, its kinda like carpeted cardboard but it molded to fit where his back seats where. Has anyone taken the back out of their Camaro's and if so what dod you guys do about the humps under the back seats where the passangers sat.