Does this require a new downpipe or can I use my stock one?

The collector outlet design is specific to this header—verify your downpipe's inlet diameter and flange pattern against the header outlet before purchasing. Adapter pipes or a custom downpipe may be necessary depending on your existing exhaust system.

Will I need to have this ceramic coated or can I run it bare stainless?

Bare stainless will develop heat discoloration over time but won't rust or degrade. Ceramic coating is optional—choose based on whether you prefer the natural stainless appearance or want to minimize underhood heat and preserve finish.

What gasket or sealing material should I use at the head flange?

Install with a quality header gasket rated for your engine's compression and intended boost level if applicable. Refer to your vehicle's service manual or gasket manufacturer's torque specs—do not reuse the old gasket.