Where can I find thai sweet salted shredded preserved radish?

Trying to follow Andy Ricker's pad thai recipe

1. Tiparos fish sauce- check 2. Healthy Boy thin soy sauce- check 3. Tamarind paste- check 4. Palm sugar- check 5. Sweet Salted shredded preserved radish??? No luck

Went to Bangkok center in Chinatown, they didn't have it but had salted preserved turnip.

Any ideas? I love tracking down obscure ingredients.

Perhaps I could quick pickle some radish in some sugar/salt,