I'm obviously biased but a set of Rushforth Fuels would look killer on there! They aren't exactly retro like the Americans in the rendering but they have a similar 5 spoke profile and feel that would appeal to your theme.
They can even be powdercoated a variety of finishes to look more subtle like the cast finish in the rendering.
http://i256.photobucket.com/albums/h...s/Fuelpic3.jpg
http://i256.photobucket.com/albums/h...s/Fuelpic2.jpg
Let us know if you need a quote