Not terribly familiar with the Oldsmobiles but here are my thoughts. I think if you retain the bump it will blow people’s minds when they figure out that you replicated the original stuff in steel. Anybody can make it flat, but the work you put into replicating the original bump is something that many people will not be able to wrap their heads around. Sort of one of those “hey that looks stock but there’s something just different about it “ moments that will take most a little bit to figure out.