Alex IROC Z-28

I wonder if anybody knows the measures behing the back site of the 2011 Screw I know I have some space behind it....I just wonder how much I found something that I wonde if would fit behing it

http://www.crutchfield.com/p_2061TCV...102.html?tp=13

any help is welcome....

CoreyBHFX4

Are you talking about removing the back seat and putting it behind it, or just UNDER the back seat that folds up?

Alex IROC Z-28

take the seat of and put behind it....below the sliding back window
I want that good sound but i dont want anything big under the seats because I use the inside a lot.....