Here's my take on an upper grill block. Took a few ideas over the last month, but this one seems to be the easiest to implement, but still work just as good as any other.
But a few small pieces of aluminum sheeting for the mounts.
Used cardboard to get a rough start (put behind the bumper and traced), then put that on the coroplast, then shut the hood as far as I could and used a pen or sharpie to trace the bumper... dismount and cut, then remount and do it again. Was about 6 times or so, but got it. Also drilled a 1" hole for hood lever.
And a duct-tape veneer later... it's very stealthy!
We'll see how it does!