67 barracuda convertible, what's it worth?

I agree that 4K is probably too much for that car. I know because that's about what I paid for my 68, and the body looked just like that. Mine was running and driving, but the black primer covered a lot of lousy body work and rust. Still, I don't feel too bad because I wanted a convertible and I wanted a project, and it was close. If you are willing to wait a while you can probably find a better deal (particularly something complete, ideally in original paint with the trouble spots easily visible). But convertibles are rare enough that distance from your garage is an important factor. Good luck.