I have a chance to buy a 1960's chevy truck long bed not sure what year it is exactly. My great grandfather was the original ower the thing has been sitting for past 18 years in a garage or barn with open front door. They said it ran 7 years ago when the moved it to the barn. The truck is in great shape for its age. How much do you guys think its worth I know with this little info its hard to say Im just tring to get a ball park price ?