What year is yours?
Either way, the good news is that if you follow the instructions we have here on the nest - even a novice can install the new cover AND it's a great stepping stone into learning more about your Eagle and mechanics in general. If you're lucky (and lazy like me) you can get the old cover off and the new one on without being forced to tear off a boat load of other stuff. It will be a PITA if you have all the emissions stuff over the top though.
The drilling and tapping though... easy. I installed mine in a couple hours with help from my brother... mine still leaks, but it's only because my bolts are not torqued down... and that's only because I don't have one fo those cool torqu wrenches that show you how many lbs of pressure you're putting on it. Make sure you don't over torque, otherwise your easy project will be swapping out for a new head, lol!