Do I need to replace the exhaust gasket when installing this?

Yes. The old gasket won't seal reliably after removal. Grab a new header gasket that matches your engine before you start — it's inexpensive insurance against exhaust leaks.

Does this header come with mounting bolts or flanges?

The assembly ships as a complete header. Test-fit it first to confirm which fasteners or adapters your specific setup needs — mounting hardware compatibility can vary by engine configuration.

Should I paint this or ceramic coat it before installation?

Stainless won't rust bare, so coating is optional. Many builders leave it raw for the industrial look, but heat tape or ceramic coating will reduce underhood temps and protect nearby wiring if that's a concern in your build.