I really have to agree on the way Lionel should mount the class lamps if they decide to do them.
Even though it's using the less detailed US tooling, the Vision Line 700E really gets the look of the class lights right, as did the earlier US tooled scale Hudsons - mounted at the edge of the smokebox front rather than towards the center.
And Dave, the NYC Hudsons numbered 5200-5344 were in the J1 class.