I wanted something that wasn't your typical third brake light. I cut a slit into the stainless upright. I put a bunch of LED's behind it. I actually bought a third brake light with the red lens and just removed all the LED's and discarded the rest of it. I then used clear silicone to fill the slit so it looks white.
It's been a while since I've worked on the Stude.. I figure I should get a little more done before going to this years Goodguys event in NC. I'm finishing up the door jams where I installed the Bear Claws.