Ryan,
When we did the orange Camaro, we lowered it almost as far as you could go on the coilovers. When you hit a big bump, the tires rubbed on the inner fenders and rubbed off the powdercoating. We raised it back up a little but if we had a slightly different offset on the wheels (to the inside) I`m sure it would clear. The inner fender tapers somewhat and thats where it rubbed. One thing I should mention is that when it was lowered all the way, you don't have much travel left and the bump stops only have about 1in of travel.It looks cool, but the ride is not so keep that in mind.
Kurt
www.autokraft.org