Rear View Mirror w/ Roll Cage

I have factory 2 post A body mirrors on my 66 Valiant racecar and I must say that after a 135 mph run they are both pointed down. New reproduction pieces. I may JB weld them in place.
Is it mounted in the factory location? Looking at my '66 Dart, it seems the cage is occupying the same space as would be the factory rear view mirror. I may have to get creative and just figure out a clean way to mount the factory mirror to the cage bar.

Thanks for the input guys! Lots of ways to skin this cat for sure.