Will this bolt directly to my stock catalytic converter?

Yes, this is a catback system designed to connect at the catalytic converter outlet and bolt straight to the car. Use factory mounting points where available and verify alignment before final tightening.

Do I need to remove or modify anything else on the car before install?

You'll need to disconnect or remove the stock exhaust system. Depending on age and condition, some bolts may be stuck — penetrating oil and patience help. Check clearance at suspension components and heat shields before fully securing the system.

Is this exhaust bare stainless or does it have any coating?

It ships as bare stainless steel. The material itself resists rust, but you can polish it for shine or apply high-temp coating if you prefer a specific finish. Many owners leave it natural and let the patina develop.