ok so I performed this mod to my truck today... but I did it a little different.
I know people have mentioned how they do not like how when this mod is complete that the upper corners look different than the stock lowers. The way I did it I solved this issue. I also made it so I do not have to keep cutting and epoxying the mounting "braket" to knew upper corners (I did this because I plan on going to clears eventually and know it would also drive me insane with the uppers looking different than the lowers)
I made a mounting "plate" out of some corners I got from the junk yard
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Then I took a dremel and cut a hole out of the grille shell that cleared the cuttout of the newly fabed plate
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Then I placed the upper corner in place an made the same hole
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Then I epoxied the mounting plate to the back side of the grill shell (It went on the back side to give me just enough clearance for the bulb inside the upper corner)
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and then I test fit the bulb and socket
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The way I did it if I change corners all I have to do is drill a hole that is just a little bigger than the socket. This way both corners will look the same as the stock ones