Buying a retired United States Postal Service (USPS) mail truck is notoriously difficult because the USPS typically mandates that decommissioned be crushed or scrapped for parts rather than sold to the public. However, you can still find older "Dispatch Jeeps" or LLV-style vehicles from other sources. Best Places to Buy
If you are looking for a project vehicle or a unique delivery van, these platforms are your best options: buy old mail truck
What will happen to old mail trucks being sold by the post office? Buying a retired United States Postal Service (USPS)