I love this mod, very original!
I personally can't stand the early LE flat square lower corner bumper and the way that line wraps straight around, it looks like an old school lincoln navigator. I just bought a 13 Limited with bumper damage and I will probably do this, especially since the big piece is only $61.
I found a link you posted to the bumper cover on another thread, that exact one is currently out of stock. I think I found another, looks the same. Maybe you would know better? I'll put it here for referece:
Amazon bumper cover
If that is the one it looks like it comes up on lots of vendors by searching 10-13 4runner Trail Edition bumper cover, even though it doesn't have the same center as a TE. I see the TE center "bull bar" sold separately. Is that just another piece over this Canada SR5 you used?