How much is my truck worth?

Here's the rundown on my truck. I
have a 78 f150 ranger lariat 2wd reg
cab long bed c6 automatic has origin
a/c and cruise control and it works.
Also has the passenger side bedside
tool box/compartment, even has the
original spare tire and radio. 400m v8
has 109,000 original miles needs
very little body work paint still shines
even the tailgate opens and closes
perfect and is in perfect shape. Only
modification is headers mufflers
wheels and tires. I've been herring
that my particular truck is hard to
find in the shape it's in. Opinions and
prices would be greatly appreciated!