this was from a parts bike I had. Hand made. This is stainless so not an easy shop fab, but maybe useful for you to come up with something if you don't find anything.   it's made from flat stock and bent. I made a template for future needs. This lighting is ebay. You can make flat portions larger for different lights. the lower bit is just thin aluminum cut to cover the exposed wiring and such under the tail. It all bolts to the existing subframe wiith no