Do I need to prep the gasket surface before installation?

Yes. Clean both the cylinder head and header mating surfaces with a wire brush to remove old gasket material, carbon, and corrosion. A smooth, flat surface ensures a proper seal on first install.

What hardware do I need to bolt this down?

This gasket assembly only — fasteners and studs are not included. Use your original header bolts or studs. If yours are corroded or stripped, source replacement bolts rated for exhaust service before assembly.

Can I reuse this gasket if I pull the headers back off?

Not recommended. Once compressed under bolt load and exposed to heat cycles, gasket material loses its sealing integrity. Plan on a fresh gasket each time you separate header from head.