I think your on to something, Jon. I'm sure Dave will chime in, soon.
Really doesn't matter though. Dave just fitted one for his own use because, he liked the look of it. I'm sure he didn't worry about copyrighting the thing. He made his from scratch. The more I look at it...
The more I kind of want to do the same to my car.
Only, the way Dave made his. Means more that way.