I just did this a few months ago on my 92 300D 2.5. These directions should work for your car as well. Buy an allen wrench adapter set to go with ur set. I cannot remember what size they were, maybe an 8 or 10, you will also need a u-joint socket and extension to get to those hard to reach places. While your out shopping, you might want to buy a manifold gasket as well. It takes an hour to remove and another hour to reinstall on my car. You have to remove some linkage too, the just snap on and off. I hope this helps you some.