that convertible can be worth a pretty penny in any condition , there are a number of online warehouses with catologs you can order and make this thing look soo good. Like " year one.com" and " classic industries.com" these are the two websites with the top of the line parts , but there are plenty of others I would go to a online magazine called hemmings motor news , hemmings.com has an online site that is a dedicated car lovers magazine, anything old as long as its a car will have thousands of links for anything you need, including world wide access to car lovers who love mustangs. I use the want ads to get an idea of what cars are selling for, you can also check autotrader classics.com I use them to check all across the USA and see what a vehicle is selling for. type the year in twice then make and model, leave any distance in the search box and type in your zip and you can check all 50 states. And last but not least nada.com has a classic car price guide in the consumer section so by cross checking all three i try to get some idea of what a vehicle will be worth. This should give you a starting place, and finally if you just type 1969 ford mustang " in the web search box you will get thousands of hits. have fun.