You may do better buying a standard grille guard and altering it so that only the center portion is present.
I say this because I just recently had to buy a bumper/grille guard for my issued law enforcement vehicle and was hard-pressed to find one for an F-150. So unless there are more than a few agencies running 4Runners or Tacomas, there probably won't be any police push bumpers made that will fit.
I ended up getting the Rancher from GoIndustries, mainly because it has the push-bar center area, but also side protection for critters and whatnot.
It recently saved my bacon when I hit some ice, went down a 40-foot ravine, over a 10-foot culvert and into a frozen stream (see below). Without the guard, we'd be talking serious engine issues. As of now, the thing is actually still driveable.