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.
i dont know which fuel pump is better for me car so any suggestion for turbo car..... i know that racing fuel pump is 250 rite? but ppl say got sound ...