Re-install the pipe seal and attach the silencer springs. Use the four springs included in the kit to attach the silencer with the pipe.
When all the silencer springs are attached, it should look like this. You should also have one stock pipe spring left over.
Before you re-install your hood and side panels, you may want to take the time to do three often over-looked maintenance checks—Coolant level, quick-drive belt deflection (should be snug) and drive belt deflection (about an inch).