Tecoya,
Is this a tundra with the intergrated mudflaps?
Or a tundra with mudflaps added afterwards? To me this makes the difference. I believe it is the tundras with the TRD package and the ones with the Limited package that have the intergrated mudflaps. While just the regular/Sr5 have mudflaps mounted afterwards.
If I am wrong I am sure so one will chime in. Thats whats great about this board, so much knowledge.
Anyway that's make take on this subject.