Eater just published a long (and interesting) article on Sun Noodle and its impact on ramen in the US.
"Inside Sun Noodle, the Secret Weapon of America's Best Ramen Shops"
It pointed out that 9 of 10 of Pete Wells' top ramen joints in NY had their noodles custom made by Sun.in its New Jersey factory. (Ippudo makes their own).
They followed up with an article:
"29 Ramen Shops Serving Sun Noodles Across the US"
Eater pointed out the many ramen shops do not want to divulge their sources. With that caveat, not one of the 29 ramen shops named are in the Bay Area.
Are Bay Area Ramen shops just coy, or is there a closer acceptable source than Sun's Rancho Dominguez factory?