1968 340S Coupe 4spd

Swapping everything over to davescuda 340/4 speed car sounds like a pretty good idea. If you are set on fixing what you have, there is a near perfect front chassis from a 71 Duster down here in NJ that should give you all the parts you need to fix the Barracuda. I think the price would be right also. I'm pretty sure we cut it small enough to fit in the back of a pickup.

PM me if interested but do it soon before it gets scrapped.

I have a solid 68 here too but I'm not trying to sell something here. I just know how every body shop and part vendor will be happy to take your money. It's the end result that bothers me. Soo much money and labor and less to show for it.
I'll compare the unibody chassis to a blank canvas. They are all alike in the beginning. It's what's put on the canvas that makes the art and the value. I dont think the art could be lifted from rotten canvas and applied to another. Even if, that art was restored as much as possible the apraised value would be adjusted. The cost of the restoration could be more that the adjusted value too.
Atleast with a car you can lift the art and apply it to another canvas/chassis.
If there was a frame and I knew you could get the body panels to line up right I would leave you alone. The problem with unibody is lack of rigid foundation. Get one rocker out of line and every body panel will need to move. Then you have wind noise and water leaks .... I'm done.