You will need a torque wrench, a set of combo wrenches- metric, and metric sockets, a floor jack, a gear puller and a detailed repair manual, plus skill and a sharp memory. It is a big and complicated job. When you get the head off, you will need to take it to a machine shop so it can be checked for cracks or warpage, and be reconditioned if necessary. You do not have the tools to do that, or you would not have asked this question.