Rossco, please dont take comments to heart, don't want to dampen your enthusiasm because it would be awesome to own a hobby shop and I think everyone just wants to help you start off on the right track.
Hotrod builders are another industry where a modern business want's a classic look for their signage. Here's some examples ..
[img]http://4.bp.blogspot.com/_ZTbQGYYWOLU/S4DKi6dqBRI/AAAAAAAAAAM/MhRBevoLM0I/S1600-R/sign+4.jpg[img]
I'm sure a good graphic designer could come up with something really good.