Welcome Scotland rick.
Always gratifying to learn of cars on the other side of the pond! Not sure exactly why, but it just seems great to me.
If you are looking for fiberglass body panels, all the molds that Archie made available are now in the custody of Doug at Fierowarehouse.
He's a little hard to get hold of, but perseverance usually pays off.
You can email him here: email@example.com
Put "Fiero Parts Order" or "Finale/Fino Parts Inquiry" as the subject line and be patient.
Not sure if he can help you with parts other than the fiberglass body panels, but like I said, he does have the molds that Archie was turning loose.
We like pics here, so if you're so inclined, post a couple of your new baby!