To cut to the chase, and ignoring our resident "hand wringer", I'm thinking that as it sits, it's worth a maximum of $2500. More likely half of that, or even less. The crate motor isn't likely going to count for much, unless it's pristine.
But it's difficult to judge, further, without seeing interior pics, etc.
One thing that is quite a show-stopper is rust. If you don't mind... pull back the carpet on the short sides of the rear compartment. Post pictures of the walls from the rubber gasket, down to the "ledge".
This is where the upper rear frame rails are welded to the body, and probably the first place that Fieros start to rust, other than the tin plugs in the floor pan. Since you're inland Florida, I wouldn't expect this to be an issue, but anyone who knows what they're doing is going to want to see.
I could also be way off. It might be a diamond in the rough, when viewed in person.
One downside (at least in my opinion) is that it's an (untested) automatic transmission. Most prospective Fiero owners are looking for a manual trans.
On the other hand, it actually looks good, from what I can see. It doesn't look like it's going to need a paint job, any time soon. Again, more pictures are always better.
The door "catching" on the fender is not a really big deal. I've had two Fieros that did this. Just be sure that you don't allow the door to bend and crack the fender. That can happen.
Fixing the "interference" is not difficult. It's just "a thing".
Edit - Looks like the interference is caused by the fender not being attached at the bottom. (It allows the fender to sag, under its own weight, and pulls the upper portion in towards the car.) Usually an easy fix, for someone who knows the cars.
Please take my advice as being worth exactly what it costs you.
If I were in the market for a Fiero, I would be looking for something newer, with a manual. So I may not be the best judge.
[This message has been edited by Raydar (edited 10-30-2023).]