Trying to value a 1979 Mustang Ghia- Help

I have a 1979 Ghia Hatchback, first year of the fox body. It has a V6 2.8 with 88,000 original miles. Has AC and heat, good interior, has a six cluster dash; the outside has some surface rust and has recently gotten  bumped by a tow truck leaving a good dent in the front passenger fender. The car ran great  but is now having some electrical issues due to the area where it was hit. Trying to figure out how much this car would be worth from an insurance stand point. Any help would be great! Thanks