Will this header work with my stock exhaust system?

Yes. This header connects directly to your factory exhaust path. You can run it stock or upgrade the downpipe and cat-back later—both work without modification.

Do I need to use a gasket sealer or just rely on the gasket?

Always use a high-temperature gasket sealer rated for exhaust systems. It prevents exhaust leaks at the mounting flange and is standard practice on any header install.

Can I install this myself with basic hand tools?

Installation requires access to the engine bay and standard wrenches to unbolt the factory manifold and bolt on the header. Time commitment depends on your comfort level—budget a few hours if you're new to it.