I have a '75 Ford F250 4WD. It has 75,000 miles, Manual trans, Power Steering, NO A/C, 12.00 x 33 tires. I'm trying to find a blue book type of value, but can't find any listings for these "classic" years.

I believe that the California DMV has been overcharging me for years for registration and my first job is to find a legitimate value because part of the registration is based on value. Thanks for your help