Is that Autocad I see?
You've suddenly got me all excited about the recreation of the New York exterior.
A few years back, I built a replica of the station in 3D Studio Max for an animation project (as it happens, it didn't use any precise measurement and so isn't something to work from here). Depending on things, I might be able to get you an even better basis for scale, I have a photo with my Mum stood next to the station, so if I can get her height you can use that to possibly work out more of the scale.
What's the program that let you put that mesh up against the front of the station?
Glad to hear the photos have been help thus far.
If I haven't already said it, you can find a great collection of H&L8 photos on Flickr.