You need the tool to attach the race to the fork. You will need to buy a new headset in most cases. I know campagnolo spare races cost as much as a new HS... I would cut the fork to same length as your current fork. From how you are explaining your situation, I would go to the LBS and pay the forty bucks or so to do it.

But to answer your question. The work you need to do is easy with the right tools and the instructions on the Park site..