68 barracuda restore or hot-rod?????

Although rare with the 318/4-speed setup, I doubt you would get the money you deserve if you restored it back to stock. Even if you did, how much money would it be? I think you should do what you really want, which seems to be making it into a hot resto-rod. I think as far as Mopars go, as long as you turn it into something clean and complete, it will be worth decent money anyway.