Since your going with an HRC kit, you can do it yourself, only an idiot could mess up with those instructions. Now if you had a Star kit then I would say you might want some help as those instructions assume that you know everything in the world about your car and don;t give you much more than....
1. Take off old fuel system
2. Install new fuel system
3. Install turbo
4. Go drive
, seriousdly, they are not very thorough to say the least. The Hahn instructions pretty much hold your hand and walk you through the whole procedure. I didn't know that much about the whole thing wheh I did mine and I got it done in about 15 hours. And now I know a whole lot about how the thing works and what parts are on my car.