You have sport suspension. All 330 coupes came with it.
I am not sure exactly what type of scraping you're referring to but blown dampers will not affect your static ride height by a noticeable amount, they will only let your suspension compress quicker than it should.
If you want stock ride height, maybe stick with the springs you've got. You could maybe throw in a set of spring pads to raise it up a bit. Replace your bushings and RSMs and get some new dampers. Check out Koni FSDs.