I've also looked to Mannheim's (sp?) Gold Book for values of classic cars. Just do a Google search for Gold Book and you should get the website. What it really comes down to though is how much do you want it and how much will he sell it for. After looking at a classic car for my wife, I got an idea of how much various replacement parts that I thought it needed would cost (doing the work myself) and estimated how much a new paint job would cost based on the car's paint job. Since I've torn into the car, I am finding items that I will need to have done for me (new floor pan

, rust hidden by much gunk when I looked it over, among other items) that have increased my new estimated cost for repairs to about twice my original estimate. So, to figure the total cost for the truck restored to the condition you want it in take the purchase price and add double (maybe triple) what you think it will cost for parts to repair it, and this will give you something approaching the true total cost. Then decide if you still want to undertake the herculean task of restoring it

.