Some time ago I posted about Toohey's Auto Supply closing. There's a youtube channel and web site from some folks that bought up some of the car parts and have purchased some other companies that went out of business and are now selling parts on their new site. They don't have alot of stuff but what they have is USA made parts for different car manufacturers and different years and they're selling it pretty cheaply. They are a non-profit and their goal is to get the parts into the hands of car enthusiasts. If you have a chance go have a look and you might find something you've been looking for.
https://savetheparts.org/ and https://www.youtube.com/@motorheadmen