Maybe mount on roll hoops, pretty high up and you do not have to drill any holes...
I just emailed a company that does motorcycle lighting. Told them what I was needing and wanting to do. I hope to talk with them this week. I want to make it clean and a part of the car as much as possible. Once I find something that will fit the area, I will see what it will take to mount it on the surface between the hoops. I am not thinking it will be difficult to do. I would like to ad day time running lights to the ca. I noticed when I was relocating the headlights that there was a spare wire in the headlight bucket. Is that for running lights? I would like to upgrade the headlights on this car as well. I want to get it ready for some long touring trips this coming spring