Do I need to remove the entire exhaust manifold to replace this gasket?

You'll need to unbolt the manifold from the cylinder head to access the gasket—full removal isn't always necessary, but it depends on your engine bay layout and what else is in the way. Check your service manual for the specific bolt sequence and torque specs for your model year.

Should I clean the manifold and head surfaces before installing the new gasket?

Yes. Scrape off any remaining old gasket material and carbon buildup from both the manifold flange and the cylinder head surface. A clean, flat seat ensures a proper seal and prevents future leaks.

Will I need new bolts, or can I reuse the factory studs and nuts?

Factory studs are typically reusable if they're in good condition—no stripping, corrosion, or damage. If any are compromised, replace them. Hardware is not included with this gasket, so verify your current fasteners before installation.