Is it a 5 speed (originally it would have been a 4 speed)? Seem to remember it was, if so then she is correct - Fuego origin (amongst others).
The engine and box combination is probably the reason why there is no plate fitted - the original plate is unlikely to fit, it’s likely to have done many miles without one too so I wouldn’t worry too much. Mine doesn’t have one and to date (21 years) I’ve never had an issue either on track or road.