Thought I would add what I did for my reverse lights.
I did have Duallys mounted to rear shackles in flood version. Plenty bright but not much spread of light and I didn't like them hanging from the bottom.
I have since cut into my bumper and flush mounted diffused SRQ2 lights.
Yes, I'm the same idiot who cut my 2013 FX4 grill to add the SR 30" bar on the top of the grill posted earlier in this post.
I also took the Duallys I previously had for reverse lights and mounted in my factory fog lights. (don't have a pic of this but everyone has seen these mounted like this)