Best Place to Buy SALT PORK?

[mrkinla2]

So, I'm interested in making the Pasta all'Amatriciana from the latest issue of Cook's Illustrated. Instead of guanciale, it calls for salt pork - which I don't recall seeing anywhere that I shop (of course, it may be there, and it's a case of me not looking for it). But do the knowledgeable folks here care to suggest a good place to pick this up? And has anyone tried the recipe?

[Galen]

It's kept by the bacon at all supermarkets.

[Dirtywextraolives]

I have found it for my chowder at my local Von's & Ralph's.

[boogiebaby]

+1 for Ralph's..