After our original fridge died, we looked and looked for one that would fit in our 67. The problem is that most more recent ones are either very small or too large. Finally, we did locate one model of the Dometic that was only somewhat smaller than the original. It's the RM 7401L (The "L" stands for left.) It's a European model, so not available at the local RV outfit and has to be ordered.
Not that we're that impressed with the new fridge, however. I really wish we still had the old one.