It was very simple actually. Once aligned and measured for equal distance from center, I took a drill and basically drilled out the diameter of the bolt in the grill. It's painted plastic so not really a big deal to drill. The mounting bracket on the Slimlites allow it to be mounted 180 degrees either way (perfect for what I wanted to do). I haven't wired them yet but that should be similiar to the 100W KC Daylighters I already have mounted in my T&H Bull Bar. Picture of the front end coming tonight.