Firstly, where is it leaking from? If its from the gasket seals around the water pump body, you can use rtv sealant to re-seal the water pump.
However, if it leaks from the pulley bearing, I'm afraid you will have to change the entire pump.
hey Im about to grad from university here in japan on 2012 so Im thinking of bringing back my FD together with me.but I dunno If it can be brought back or not since it is not even listed in the 2011 CIF from...