1967 dart gt slant six value

Good Day fellow Mopar Lovers! I was not sure where to get my question answered so I placed it here. I am a retired police officer and my father is going to be 76 this year but is still in the garage doing body work and engines, etc. we are thinking of getting a car for my 15 yo to involve my father and I with my son to work on. We are looking at 67-69 Dart. What would be a fair price range for a 1967 Dart or GT with slant six auto, minimal surface rust and no major body damage? We have two options where I live. Sorry no photos yet.

I know its dependent on the car, but think a rust free car that hasn't been driven in a while, maybe needs gone through (brakes, rear, trans, engine) without body work just the mechanicals. I was thinking no more than 2500.00?

Thank You!