I received my correct ducts from BMAParts.com on Friday so today I removed the bumper to install the ducts and the fog lights and fit the bumper a little better.
I know you don't have to install the correct ducts but it looks SO much better when you do. Plus you get the duct funneling air up to the alternator.
The HID fogs required a thicker o-ring to fit in the housing properly and to seal it as well as to keep the moisture out. I have a ton of O-rings so that was easy.
I adjusted the drivers side bumper mount and it made a big difference in the way it looks.
I'll post pics when it stops raining and I can get some shots...