Barracuda tail light swap

Got a bunch of these high bright COB LEDs for a possible reverse light solution. Evilbay $1.36 a pair, I bought a dozen shipped for less than $10. Can always use em for something. Just used one to light up a trailer licence plate on a scrap trailer I built. Was gonna make a mounting plate that the licence plate attaches to. Now the question is how do I want to mount the lights
above the plate horizontally ?
below the plate horizontally ?
Above and below the plate horizontally ?
On either side of the plate vertically ?

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