since no one else really feels like helping............
it depends on the material of the lip. You have to be more careful with fiberglass or ABS plastic. Urethane is a bit more forgiving.
I have the comptech version of the type r lip (Urethane). first, you definitely need the two self tapping screws that hold the lip on the sides. 2 per side. The next part it optional. Most lips come with double sided tape for the middle part of the lip between the new lip and the lower portion of the air dam on the stock bumper. I chose to use it, because it is just added strength ensuring that the lip stays 100% in place. Plus, i didnt want it vibrating on there. To put it on i usually get two people. one person hold one side in place, and the other can use a hair dryer or heat gun to warm and "stretch" the lip around the other side. Then just make sure it is lined up and where you want it before you start the screws........pm me if you have any other questions------its really pretty easy.