The 98% number was my estimate based on a guess to the potential buyers within traveling distance of your location. My guess is that most potential buyers are not within reasonable travel distance. Who wants to fly in to see a car you might not buy? Don't underestimate how limited your audience is.
You are not buying, you are selling so you can guarantee the buyer has a good experience. You can do that by carefully and accurately describing (with lots of pictures) the car.
Go to
my website and look at the two Cougars I sold. Both were more expensive (then the Graham) project cars sold sight unseen. Both buyers were happy. If I had to sell them locally I would still own both of them.