Do I need to modify the exhaust hangers or use new clamps?

The assembly bolts at factory connection points, but verify your stock hangers line up with the new rear section before final tightening. Some builders use the OEM clamps; others upgrade to performance-grade band clamps for a cleaner fit.

Will this work with my stock catalytic converter and mid-pipe?

Yes. This is an axleback only — it connects downstream of the mid-pipe, so your converter and mid-section stay untouched. Bolt-on compatibility depends on no modifications to the OEM connection point.

Do the rolled tips need polishing or protection when they arrive?

Stainless tips ship ready to bolt. Wipe them down before install to remove any light oxidation from shipping. If you live in a salt-air or heavy-rain region, periodic cleaning keeps the finish from streaking, but no special coating is necessary.