1966/67 barracuda bucket seat interchangeability

It might be more simple to install the 65 seats then use measurements of the later full-length console to determine will it fit. I personally don't have experience with this swap but in my mind I can see the wider and slightly longer base portion of the 65 model seat colliding with the wider forward portion of the console.
Again with my personal experience and opinion... the OEM console is a POS. No cup holders, no arm rest, and a vertical oriented lighter well. A coin dropped in there is a short circuit of 20 amps minimum. My RAM truck has a 12 volt well inside the console but they were wise enough to place it horizontally, rubber cover door or not.
The 67 B'cuda vert I had planned to restore came from factory with floor shift automatic and console. I had already gathered the parts needed to change it to column shift. I imagined my grandkids standing and walking through between the buckets same as I and cousins did in a uncles convertible.
Final comment, If you are determined you just must have a center piece of furniture in the cabin, Look at the threads about homemade consoles. Build or buy something practical and usable.