Foglight mounts needed or ideas

My brother gave me a set of Hella 1000FF's and I am thinking about mounting them to the brush guard. Problem is that they have no mounting brackets. Aside from searching for a set or buying generic ones, anyone got any ideas how to mount them? The challenge is the slanted angle that bolt hole is at on the back of the housing.

I don't have a access to anything more than the normal run of tools.

Thanks for any suggestions.