You may get better luck if you have this thread moved to the Classic Car section.....
The first place to look is in your local classifieds.... try the free to list ones. Around here they have names like "IWANNA", "Trading POST", etc.....
The next place is on Craig's List, start out local and slowly expand to further away.
If you still don't have luck you could go to Auto Trader, but the prices will be a little higher.
And as a last resort go the Ebay route. But be very cautious, while there are lots of good deals to be had, there are a lot of low lifes that will take advantage of people.
Hope this helps.