Yea I've seen posters for the Bonneville as a wagon... I believe it'* called a "Bonneville Safari".
Here'* links for 60s Bonneville wagons...
Here is a picture of the 79 LeManns wagon and the Bonneville wagon.
My folks used to own two 80s Custom Cruisers, I believe they were the identical (same body) as the Bonneville Safari'*. (the photo of the gold one looks almost identical to one my parents owned).
This 85 Custom Cruiser looks identical to the blue one my folks owned.
I wish they still had one of those cars.... with the 3rd row seat, it would be perfect for hauling people up to the cottages.