I wonder if there have been any North American probe start metal halide cobrahead street lighting luminaires have been factory equipped with position oriented E39 lampholders to allow for the use of high performance horizontal burning probe start metal halide lamps that would often have position oriented E39 lampholders. If so, I would love to know which manufacturers specifically made probe start metal halide cobraheads that were specifically equipped with position oriented E39 lampholders.