1970 cuda gran coupe??

So what you are telling me is that my 65 barracuda with a slant 6 is gaining in value vs the 70?
I don’t know how you came up with that. The only way I see you coming up with that is while your tripping on mushrooms and acid while snorting Copious amounts of cocaine and drinking gallons of beer in the desert heat!
20K and up, 70 cuda's have great market value now.
In 5 years who knows....
Your right! The market could tank or skyrocket at the extreme ends.
But a Cuda is not a Gran Coupe or a Barracuda.
3, otherwise identical car bodies minus badging, trim, and power plants are all different models like it or not. Not matter what there born with.