1963 Barracuda convertible

And it already had a 273 in 63?????
I would be suspicious. I'd be putting on my cow pasture boots on and take a REAL good look at this. It makes a great story to call it a prototype. Is it a ChryCo factory prototype? I'd like to see the VIN (is there one?) and also build dates that would be on the engine, etc. It helps sell the museum but not sure of the accuracy...