I have one of those "half-way" curbs in front of my house. It's a pain in the butt, especially since I have a VERY low '06 GT. I have a full FMS Racing suspension with a full drop, and I have the Cervini C-500 kit, so I have side exhausts and a lower front clip.
I have to take my driveway at a very sharp angle. I basically end up entering at nearly parallel and drive up on the sidewalk, and then cut it into the garage. It's a pain in the but, but I just love the way the car looks, so I'll deal with it.
I wish I could re-do the driveway, but HOA's.
I measured the clearance between the ground and the front spoiler ~4" to the spoiler, and ~3" to the airdam just behind the cosmetic surface. Between the ground and the side exhausts is ~3" mark. It's low. I scraped a bit when I first got it, but it's pretty rare that I do anymore.
Good luck