Do I need to replace my existing exhaust manifold gasket when installing this header?

Yes—once you remove the factory manifold, install a fresh gasket between the header flange and cylinder head. Use a quality gasket rated for your engine's compression and operating temperature.

Will this header work with my current exhaust system, or do I need to modify the downpipe connection?

Test-fit the header outlet to your existing downpipe before final installation. If the angle or diameter doesn't match exactly, you may need an adapter or custom exhaust work. Measure your current system first.

Should I ceramic coat or paint this header before or after installation?

Headers typically run too hot for standard paint. If you want heat protection, ceramic coating is your best option—apply it before bolting on, or use high-temp exhaust wrap after installation. Bare stainless will discolor slightly under heat but won't rust.