I thought about using zip ties, but I just didn't like the stock location in the middle of the two parts of the grille. I wanted it centered, but lower, where it wouldn't be such a dominant factor. I decided to use two existing fasteners where the nose piece is connected to the underbody cowl, on both sides of the centerline. Here they are, partially backed out so they can be seen.
I made a cardboard mockup as a starting point.
Then I transferred the mockup to a thin piece of scrap aluminum because it's so easy to cut with tinships. I made several changes to the aluminum pattern before I got it where I wanted it. Then I pounded out all the bends and traced it on to a piece of heavier galvanized steel sheet metal.
I bought the 1 ft square piece at Home Depot.
This stuff is much thicker and harder to cut - I recommend this type of tinsnip.
I bent the piece and taped the plate to it for another fitting. Added a couple more minor bends.
Drilled the piece and mounted the plate and screwed it to the underside of the nose. Note that I did drill two holes in the underside of the nose to stabilize the bracket. Better than five huge holes between the grilles!
I stuck a piece of adhesive-backed foam to the back of the bracket where it touches the plastic nose below the lower grille. I bent the bracket so it is under slight tension against the nose to keep it from vibrating. It's pretty sturdy.
So there you go. The plate is lower and obstructs less of the two grilles. The lower edge of the plate actually reduces the ground clearance at the nose by about an inch. If you have a steep driveway, you might scrape. Use at your own risk.
I put the dimensions on the aluminum mockup. Note there are no dimensions for the portion where the plate goes; while they're supposed to be standardized, there will be slight differences in the plates from each state, so use your own plate as a template for cutting and drilling the vertical portion of the bracket to fit correctly. The dimensions are easier to read if you download the image and magnify it.
I plan to give my aluminum mockup to the folks at CravenSpeed. I have no idea if they will actually produce it; they will have to decide if there will be enough demand to justify the CAD layout, plasma cutting, powder coating, etc. Meanwhile, make your own if you want. Let me know if you need any more info on this DIY project.
Meanwhile, I will trim the project out with a simple matte black plate frame and SS fasteners. Right now, I gotta go rake leaves.