I just went through the hassle of converting my sport bumper to a brush guard/ranch hand style lower bumper. Best I found was from Frontier here in Texas. Fits great with the stock sport grill.
My sport lower was destroyed when my wife ran over the toyota matrix that pulled out in front of her a month or so ago. It was a low speed(35 mph collision, so no injuries. It tore the passenger side wheel off the matrix, crushed the hood, and smashed the driver's side to the road. My truck drove away from the accident, but the sport bumper was mangled. I write this because I found they are costly to replace(the insurance settlement I got paid for the frontier bumper and an Edge Juice with Attitude for some cost perspective, with a few hundred left over), and also the sport bumper is TOTALLY cosmetic.
It is a different look, though. Also, the fog lights have a totally different mount to them. Same light I think. I still have mine if you want them. One has a small crack on the lens, but the mounts you need are totally intact and in good shape.
my email is -- email address removed ----I will let them go cheap to get rid of them.
Good luck,
Jon