Well, I have one tip, if youre actually looking for one, go shopping in the states. Specifically Arizona, Nevada, California, New Mexico. Not only will the car be a lot cheaper down there, they will be rust free. In my mind the Shelbys and the fastbacks are the ultimate classic Stangs. Things to look out for, they were muscle cars, look for poorly repaired accident damage, most likely at some point they might have kissed a curb or bridge abutment. Rust, right around the A-pillar, floors and the rear window. Dont even bother with a inline 6....thats about the most pathetic Mustang experience you can have, they are incredibly slow....unless you are planning to slam a V8 engine into it than they make good cars.