If any car can rock a set of headers it is the Viper.
Sound is much more intense, revs come easier, snarled are significant. These cars love headers.
With your cats gone, things are gonna be just a bit nastier. The sound is an acquired taste, but for most Viper types it is music to their ears.
On the other side, it is not unusual for a loud car, that is spectacular in the beginning to become annoying after a while. You could always put your cats back in later if that becomes an issue, or ask Jon about reversion cones that can be installed to knock off some of the higher frequencies and make cruising more pleasant.
Sometimes adding headers is just enough torque increase to cause traction issues. Even more fun.