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In case you are still on this journey 
Rigoberto's, in Milwaukie, which is just south of Portland, has them. The owners are from San Diego. http://rigobertotacoshop.com/menu
As a side note- I lived in SD for 40 years and one of the only things I miss is the Mexican food! I loved Lucha Libre, especially the Champs booth with the masks. But what I really miss is all the mariscos places in Chula Vista...
In case you are still on this journey Rigoberto's, in Milwaukie, which is just south of Portland, has them. The owners are from San Diego. http://rigobertotacoshop.com/menu
As a side note- I loved in SD for 40 years and one of the only things I miss is the Mexican food! I loved Lucha Libre, especially the Champs booth with the masks. But what I really miss is all the mariscos places in Chula Vista...
