I guess it'd help if I explained my whole system plans....
Kenwood KDC-W6527 HU
Focal 165 K2P (200W Speakers)
Pioneer Sub
Mutant 300W Amp
Silver Travla C134, Slot Loading DVD/CDRW,
256MB, VIA Epia MII 12000, Carnetix 60W, Xenarc VGA/Composite TS and a GPS Mouse

Additionally I am considering still using the speakers that are in the rear just as complimentary speakers, but if they're not much cop (which I doubt) I've got my eyes on a set of ~100W 6x9 focals elsewhere...
I was considering putting the 200W amp between the HU and to drive the focal fronts as I already have the mutant running the sub amp in the boot, and I didn't really fancy making a song and dance about them both being in there.
I wanted it hidden away, as it's not like I am showing this

My sub is not ported if that makes much difference
Should I put all my hardware on some MDF in the boot?
I dont know what to do :s
Keg