Does this bolt straight to my stock catalytic converter?

Yes, this catback system is designed to connect at the factory cat flange. You'll use the existing bolt holes — no modification to the cat itself needed.

What fasteners do I need to install this?

The connection point at the cat uses factory bolt holes. Confirm bolt count and size with your service manual, and plan for any mid-pipe or rear hangers depending on routing. Mounting hardware not specified — test fit before final fastening method.

Will this rust if I live near salt or humidity?

Stainless steel resists corrosion far better than mild steel, but condensation inside the pipes can still cause surface oxidation over time. Regular driving helps dry the system out. It won't corrode through like carbon steel, but some surface discoloration is normal.