Do I need to remove the entire exhaust manifold to install this?

You'll need to remove the manifold from the cylinder head to access the old gasket and install the new one. Unbolt the exhaust pipe, unbolt the manifold from the head, swap the gasket, and reassemble in reverse order. Basic hand tools and a jack are typically sufficient.

Should I prep or clean the gasket surfaces before installation?

Yes. Clean both the manifold and cylinder head sealing surfaces with a gasket scraper or wire brush to remove all old gasket material and carbon buildup. Dry surfaces completely before installing the new gasket—this ensures a proper seal and prevents leaks.

What should I use to secure this gasket during reassembly?

Torque the manifold bolts according to your vehicle's service manual. Don't use sealant or adhesive on this gasket unless your manual specifies it—most factory gaskets work as-is once bolted down with proper torque.