ehh…even if I did have the GL head I don’t think it would’ve worked as well since it has the bright green eye mask (black lantern Hal has a black one)…and my inner purist wouldn’t allow me to ■■■■■■■■■■■■■ it black.
But which would be less purist? Modifying the intended piece used for the set, or using an unmodified head from a completely different line? 