It was easy to get those metal plates.
So now my SN25P is another watercooled Shuttle.
I'm using the CPU-340 with a Laing DDC pro placed on top of the PSU, Swiftech MCRES Micro Rev.2 in the position of the 80mm ICE fan, Koolance CHC-122 for the NB, Alphacool Nexxxos NVXP 3 for the g'old 1800XT and a external Nexxxos Extreme rev.2 dual Radiator.
Loudest part right now ist the HDD

Trouble with the SX48 Watercooling is the Voltageregulator cooling.