"What is my 1979 Ford F100 truck.........."
Just a wild guess, but could it be a 1979 Ford F100 truck?
Perhaps you meant to ask what it's worth.
It's HIGHLY unlikely that your 35 year-old F-100 pickup only has 56,000 miles on it. More likely to be 156,000. Even if it IS well maintained and in excellent condition, I wouldn't give you more than $1500 for it.
Someone would pay 10k, maybe more
its a gas guzzler!
