N scale SD39, Progressive Rail

I have for consideration today a freshly minted N scale SD39. Progressive rail. For point of reference, Mark Gasson (Mark 4) offers SD39 conversion hoods. This is NOT one of those. This request popped up out of the blue and I had no time to order from half way around the world. I also wanted to try this as a scratch built vs conversion project. My effort probably lacks the rivet counter edge Mark's cast shell would have. I still think I did a decent job of creating a SD39 visually. If not 100% spot on accurate. See what you think. As always, comments welcome.