there are two bolts and one vaccum line holding this thin on, the bolts may be a bit rusty. There is also a gas line attached to it, and it is kinda hard to remove.
The whole procedure is super simple, self explanitory, but the hard part comes with the rusty gas line connector and those two rusty bolts. make sure to turn then the correct way (left) to loosen them, it feels akward cause you are gonna attack the two bolts from the back.
The EGR valve is simple, but has a rubber diaphram that can break. I say tackle the job yourself.
I will email the pic, as it is not wanting to post here