Kenwood Sub behind the seat

[Joji]

Check this out. Kenwood makes a subwoofer that is pretty thin. My 1999 boxster did not come with the compartment behind the headreat. it is just carpet and a net.

Do you guys know the dimensions of the space behind the seats where the rear speaker kit would go.

I am thinking of getting this Kenwwood Powered sub and putting it rioght behind the seats. Is this good place to put it. It seems if I put it in the front trunk I will lose bottom end and defintion.
thanks