Lost a 87 GN hard top
, in the divorce.
The 87 is worth more than an 86, most want a none t top car.
The cars don't sell as quick today, Value its hard to say, it would depent on whats needed Bumper fillers? weatherstrips, rust in and around the t tops.
It does look clean in the photos you posted.
10 to15 k based on condition
at 10 you could talk me into it
Good luck