No, it would be a lot different. A corvette is designed with safety in mind now a days.
Old corvette... yeah, probably not great in a wreck, but the new ones built in the last 30 or so years are pretty stout because the inner structure is designed to take the hit, not the outer body. With a fiberglass tub or cab there is nothing there to "take the hit."
I'd stick with steel unless you want a drag racer or offroad rock crawling rig (would have roll cage anyway.)
https://www.youtube.com/watch?v=L9lSwjHY00Y
https://www.youtube.com/watch?v=6yoa8McfOY0