Hi, I have never worked on my magna 3.0L V6 before but I need to as I have finally isolated a frustating coolant loss to the engine water pipe on the back of the water pump. It doesn't leak from the front of the pump but is showing a rusty stain from the valley at the rear of the water pump and running onto the gearbox. Is it straightforward to do this job in terms of removal of inlet manifold and valley cover to replace it? In addition, I need to know what gaskets I should replace when doing this job.