Cool, you have a V6 don't you?
The V6 will not see as much drop as the V8 Cars with the same set of springs. Both cars use the same springs. There are springs specifically made the V6 because of weight difference. Roush makes them. Make sure to try and get a progressive springs.
The cars you see "slamed" are using a "2 or better drop. I agree with Jesse, a 1.5" drop is great! The ride can be decent, looks good, and you don't have to worry about a whole lot of suspension adjustment problems. You still need to be careful when entering parking lots and speed bumps, but it is not a biggy. If you load your car up with people all the time, that can be a bummer with a lowered car.