My husband has a 1990 f450 super duty that once was a ambulance he converted to a flat bed. It is very clean with only 19,000 miles. I’m curious on what it’s worth. Since I can’t rely on nada because I can’t find the exact truck it makes it hard to price since we are considering selling it. I know location can fluctuate the price but I’m just curious on what people would consider a good price. Thank you!