(S) Sub Installation

i'm gonna get me a sub and amp for my punto want to keep with the theme of the car and get blaupunkt items, stumbled across these beauties.....
http://www.bluespot.co.uk/stock/spkr0_0.asp thin sub box, ideal so the missus doesn't have to complain about having all the shopping on top of her.
http://www.bluespot.co.uk/stock/amplifier_1.asp another slim sweetie to save on boot space, but still get the bass.

read a few reviews and there ment to be the dogs, wot do you think?

oh and how would I install the sub and amp in the boot? how have you guys fixed it down, in my last car i had the amp fixed to the back of the seat and mdf under my boot carpet holding the sub. don't wanna do that with the gp cos it aint to good looking.

cheers
Stu