My mum and step-dad are considering selling his truck which he no longer drives. It is a 1976 Ford F100 Custom short bed side step. My mum asked me to find out what the truck is worth for her but I have not found any comparable vehicles on line. Where do we start to find out a fair price for this vehicle? It was a driver, has approx 5k on a rebuilt motor. My step-dad has not driven it much since his retirement 18 years ago. I believe it is all stock. Any help pointing in the direction as to how to get a ball park figure for this vehicle would be appreciated!