Do I need to prep or clean the header and manifold surfaces before installing this gasket?

Yes. Both mounting surfaces should be clean and free of old gasket material, carbon, and debris. Use a gasket scraper or wire brush to remove buildup, then wipe surfaces with a clean cloth before laying down the new gasket.

Will I need new header bolts or studs, or can I reuse the factory fasteners?

Header bolts and studs are not included. Whether you reuse existing fasteners depends on their condition — if they're stripped, corroded, or have been torqued multiple times, replacement is recommended. Refer to your service manual for torque specs and fastener sizing.

Does this gasket come with any sealant applied, or do I need to use gasket maker?

This is a dry gasket with no sealant pre-applied. Many builders apply a thin bead of high-temperature gasket maker to both sides before clamping. Test-fit first to confirm fitment, then decide on sealant based on your application.