It's pretty straight forward. Just bolt the stuff together. You may or may not need the spacers, depending upon the backspacing on your wheels. In my case, I had to buy the 1/4" wheel spacers, and grind some of the cooling fins off the calipers. Other than that, just bolt it up.

I forgot though, you might need a press to press the wheel studs in and out of the rotor. You can try using a hammer to get them out, but they may not budge. And its even harder to get the new ones back in. If you don't have a press, you can take them to a shop and they should be able to press them in for you for a couple bucks.