Actually found that picture on eBay and that pair was for sale.  Here’s the link.  Doing a more extensive search may find a less expensive pair.
1954 1955 1956 1957 1958 Ford Edsel 223 6 Cyl NORS Motor Mounts B7A-6038-A (Pr) | eBay 
 

Lorena, Texas (South of Waco)

This is the FORD PART NUMBER while searching for NOS - B7A 6038-A

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i have a pair of original y block motor mounts,they look new but not sure if they are. If you are still looking let me know and i will send you some pictures to your cell phone or e mail   Carl

Carl....He needs motor mounts for 6 cyl. 223 not a Y-Block.

I ordered the ones from eBay. They will arrive some time in december. I must say it's a jungle. Some sellers seems to confuse the  part numbers - you have to double check. I also found the B7A 6038-A much cheaper in some (old) catalogues (EG. midwestearlyford.com) . They might be available somewhere else. But now I got my set and am very grateful.