The install of the lower front guard and sump protection plate is pretty easy, but as IDoMy0wnRacing mentioned it requires little bit different ordering, you cannot install OEM tow hooks with the sump plate in place, so it is necessary to install them first, then it becomes hard to wiggle in brackets for mounting the lower front guard, in my case i have shaved a little bit of metal off the bracket using dremel with diamond bit (which reminds me i should paint it!).That looks great and is next on my list (I installed their transmission plate last summer). However; I'm a little intimidated by the install complexity, how long did it take you?
Anyway, I am a software engineer and I managed to do it, so it should be a breeze for anyone mechanically inclined ;-)
Now I need to find chief rock rails in stock somewhere.