I need to change a Fuel Injector. on 2003 Mazda Mazda6

I need to change a fuel injector and was wondering about the location. I assume I will have to take the manifold off but wanted to know forsure before I start on the time consuming problem. Any ideas/comments/help?

Asked by for the 2003 Mazda Mazda6
Well i need to know which fuel injector that would be the first step, if you need a diagram post up a request at al post up some visual aids that will help you
It is for Cylinder #5 (front middle). I will also post a request on for a diagram.