China.
Seriously, there's only Pickups Northwest (in Everett, just north of Seattle) and NAPA. Vintage Auto Parts crushed their stock and left town, and nobody has even tried to fill that gap. If you're looking for gennie OEM bits, the nearest boneyard is now Olympia. Even "professional" resto shops like Dreamer's Rods are getting their overpriced Chinese chrome through vendors like PUNW.