From what I see, the first one is a JDM and the second one is a modded USDM. (Talking about the close-up pictures, the ones with the cars are not even the same :? )
Just look at them: the first one is "deep" the second one is not, just like the USDM. Also look at the top part of them where you attach it to the car.
Also the special mounting is required on the second one because they cut the original supports to fit the mesh. (I did the almost the same with mine)
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