Are you looking for a real one? or just want to clone one?....If you don't mind a clone...(why would anyone want to pay more for the real), then just search around on line...there's plenty to be found. If you want a real one...do lots of homework and know what to look for. With numbers matching muscle cars demanding big bucks these days, there are lots of fake cars out there being misrepresented....
Give us an idea of what condition you want to start with and we can keep an eye out for you. The more specific you are the better chance you have at not running a wild goose chase.