hello stephane,
a socket 370 cpu produces a maximum of 37,5W Heatpower (sorry, dont know the word for abwärmeleistung), according to this informations table:
http://www.pc-erfahrung.de/ProzessortabelleDesktop.html
That means, that you have to dissipate a maximum of 75W.
Every Heat-Transformer of aqua-computers series should make this (most of them very easily).
I would commend to take the evo 120, an aquastream or eheim 1046, an aquatube and 2 cuplex cooling blocks.
but there is a big problem: do the cpu socket only have one "nose" to fix the cooling block? If yes, its going to be difficult to install the blocks. may be you can give us some more informations?
greetings