Street Race track maps needed.

Sorry if this is the wrong place. But I am working on a google earth track directory and I am looking for a track maps of any of the street races in the past 30 years. Street names are needed.

In particular I can't find info on the Trans Am race in Grand Rapids Michigan. I found the one on Allan Wilson's site, but it lacks detail and street names.

I am working at mapping out the track layouts.

Thanks

Have you tried Guido de Carli's track website? http://www.gdecarli.it/
I couldn't see the trans am race listed, but there are a few listings for michigan.The site also has a forum, with a section in english.

Thanks! Hadn't found that site yet.