Discontinued...that is, if it ever reached production. Southern Style was supposed to make one, too. Theirs seems to be on indefinite hiatus.
Compared to SR5s/Limiteds, there are relatively very few 10-13 Trail 4Runners out there. It seems that it's easier to make this bumper work with the TE, but the 10-13 SR5/Limited trucks' bumper covers hang down quite a bit lower than the TE, and they have that chrome trim piece that goes all the way across the front. I wonder if a LoPro on a Limited or SR5 would actually reduce your approach angle, unless you have to cut a bunch of the center part of the factory bumper cover off. But then that might involve cutting the middle section of that chrome trim out, too.
If one is made strictly for the TEs, I will absolutely trim up my SR5 bumper cover so that it would fit.