Do these headers come with gaskets and bolts?

The assembly ships as headers only. Source gaskets and fasteners that match your engine's original specifications—they're critical to a sealed connection.

Will I need to modify my exhaust system to fit these?

Long tube headers flow into a collector at the back. You'll need to verify your existing downpipe and exhaust system will mate to the collector outlet, or plan for exhaust work downstream.

What prep work is required before installation?

Clean the cylinder head mounting surface thoroughly to remove old gasket material and carbon. A clean surface ensures a proper seal and prevents leaks down the road.