When I did my Country Girl funny car build, I contacted Jeff at Firebird Designs.
I sent him some pics of the real car and also sent along the body I was going to use, and he did an excellent job of making some special decals for my project...

His site is
http://firebird-designs.ecrater.com/You can contact him through his site. All of our discussions were done by email. Great guy to work with.