Westin probably makes them, but keep in mind that these (as well as headlight guards and "brush" guards) often become damage multipliers in a minor accident.
I had them on my Silverado, and someone nailed my rear fender. What would have been a simple dent and paint repair ended up ripping the guard from the mount, breaking the taillight and bending the guard into the tailgate, wrinkling the edge.
I would much rather pay for an aftermarket taillight assembly than pay for bodywork and a paint touchup.
The same happens with brush guards. A minor accident that the bumper could absorb with little to no damage ends up being a brush guard pushed into the hood and fender.