I have found my Fiero to be reliable, if taken care of. Seating is comfy, and I have driven 11 hours in a day in my Fiero.
Something to note, is that the ride in an '88 GT is vastly better than the ride in prior year Fieros. You may not notice the difference for the first few hours, but after 8 or 9 hours, you certainly will notice. Of course, this is with good tires, suspension, etc on both Fieros.