As far as the Factory LED fitment, it's way bigger than the amuse side vents so i decided to ditch the idea, the grill can be found in EBay
Plastic ABS Universal Black Sport Mesh Grill Grille Car Stock OE Style 9"x42" D | eBay

Best of luck with your build

I was looking on your build thread and I'm curious as to if the LED lights from the 2013 model fit into the amuse bumper perfectly? Im in the process of getting my bumper done and its getting painted tomorrow but I'd like to have the lights on my bumper, also, where did you purchase your honeycomb mesh from?