If a seller refuses to take a part out of a sealed box to show its condition, be wary. You don’t want to pay a premium for a box full of rust.
Search for "Your Car Model + Parts Exchange" on Facebook. Many private collectors sell through these niche communities. Pro-Tips for the Buy buy new old stock auto parts
Buying New Old Stock (NOS) auto parts is the closest a car enthusiast can get to time travel. Whether you are finishing a concours-level restoration or just want a part that actually fits your vintage daily driver, NOS is the gold standard. If a seller refuses to take a part