Alright, I got mine installed. Behind the grill 44" M & R light bar using the Rigid brackets. It was fairly simple and straight forward. I only have a couple pictures so far - I didn't want to blind the neighborhood, but I'm honestly pretty impressed. The only potential issue is the mount from the L brackets to the light. I had to use a much shorter bolt since the supplied bolts are meant to work with the M & R bracket - which as JRubin stated won't work. You could heavily modify that bracket to work, but you wouldn't have any adjustability. The difference is that the supplied brackets have a system of groves that mesh with groves in the light allowing it to securely lock in place wherever you want it aimed. The Rigid brackets don't have these, but I was able to use the little rubber grommets that come with the M&R bar and sandwich them between the Rigid brackets and the light. It seems plenty sturdy. I believe M&R could very simply fab some brackets that would be perfect, but mine feels good enough.
I was impressed with how bright this light is. It is my first experience with a light bar, but it's blinding - enough so that I didn't dare leave it on in my neighborhood in the dark for fear of pissing off the neighbors. This is why I don't yet have some night time pictures, but I will.
