You're better off getting a Limited/Longhorn grille, since there are subtle differences between the TRX and Limited/Longhorn grilles, including the center hood dimple, the flat bottom edge (against the bumper), and the fact that TRX fenders are wider than Limited/Longhorns. The headlight units are basically the same, however.
Here's the TRX:
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And here's my Longhorn (with the chrome slat grille... there's another insert with the same pattern as the bumper trim piece):
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Here's my Limited/Longhorn next to my pal's Big Horn. Pretty much everything in the grille area would need to be swapped, except the 'eyebrow' for him to have these headlights. He says they look too squinty for his liking... but even though I have a painted bumper, I still prefer the pattern in the bumper's trim piece... which is what the Limited/Laramies have.
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Here's that other grille insert I was talking about:
View attachment 174193
Hope that helps, seeing it all next to one another.