Speedo gear

I thought so but both the guys at dealership, transmission shop and dicks speedo repair says to stay with what Chrysler installed. And I have the other type of speedo gear/housing and I had new speedo cable made to work with the factory instalked part in the pix

Should be interchangeable AS A UNIT...critical measurements seem to be the same...
cable ends are different (3rd pic)
100_5580.jpeg 100_5578.jpeg 100_5546.jpeg 100_5547.jpeg 100_5548.jpeg