Has it been in Washington state for longer then you have owned it?
8F93S578512 was reported to the database in Nov 2020, in Olympia WA. Most likely, this is you.
Previously reported in Oct 2001 by a fellow in South Prairie WA 98385. He reported: it had no engine or trans, the side and back windows were broken out, I built a correct 390 and C-6, installed sequencer upgrade, wheels, windows, dash, and brakes.
I hope that helps.