I don't think a Mustang GT would have much of a problem hanging with a Corrado in the twisties.
If you learn to drive it, you can push it well beyond what most people are willing to try. Doubling the posted corner speed is usually within it's capabilities (I don't recommend pushing it if you aren't familiar with it for sure). Handling packages are all over the place for the Fox Mustangs, so if you want a real corner carver, it's not that hard to get it. The engine is easily modded and you can pull lots of power out of them too.
You should be able to find an answer to about any question you have on this site.
Good luck!