Gotcha, that's a good idea. Send RetroSolution a PM and see what he has. I might go that route also. I have his reverse CREE bulbs and they awesome!
I put the same leds in the cargo lights in my 3rd brake sockets and they work fine. I do have a 2012. I used these ones.You can LED the cargo light, but the 3rd brake light isn't LED compatible.