1955 question on what its worth

[dukcaln]

so my neighbor accross the street has this 55 long bed with a chevy 350, numbers say its an early corvette motor. Built tranny and the bed wood has been done and the interior is custom with all custom electronic gauges. It has a ford rear end from what he said. The bumpers, body and grill are flawless. Needs paint and has minor surface rust but the body is original. No bondo at all. He has owned it since 1990 and just recently fired it up after 5 years in storage. He wants to sell it and he told me he would like to get 15k for it. Its the truck in the back ground picture. He claims to have 30k into it. I see a great foundation for something awsome, but 15k seems too high. It runs and sounds good but the engine and under the hood looks normal, but it has some cool features. What will something like this go for. Its a 3500 truck and once was owned by the forestry dept. He said in 1990 when he bought the truck they took the dash out and found a parking ticket from 1957 and listed the owner as the Dept of Forestry. He has the ticket still.