PSG thanks. The only problem I had with attaching this was in "assuming" the metal framework behind the awning was aluminum tubing. Turns out, it was fabricated from steel so it took a lot longer for my guys to drill into it and they burned up more drill bits.
We used 5/16" self tapping screws through the DiBond in strategic places and behind the logo which was an inlaid medallion that went on last. I'm waiting for some plastic caps to come in which I will paint to match and then go back and cover up the few remaining heads. They're barely visible but I think it will look a lot more finished when I put them on the heads when I go back to letter the hours on the door along with two smaller hanging signs under the awning over the sidewalk.
There's a another business next door with the exact same setup who has already expressed an interest in having a sign done for her also.