'68 Barracuda top frame work on '67 Dart?

I believe it will darts and cudas of that 66-69 years are interchangeable,but if he wants to sell it, send him to me. I'm attempting to find out if a 63- 66 valiant convert frame will work on a 69 barracuda It is said the main cowel, and windshield frame were kept to reduce tooling costs.