Do I need new gaskets to install this?

Yes—get a fresh header gasket set before bolting this on. The factory gaskets compress over time and won't seal properly against new flanges.

Will this bolt straight to my stock exhaust system?

It bolts to the factory manifold studs, but check your existing downpipe and mid-pipe for compatibility. Some bolt right up; others may need minor adjustment depending on your current exhaust setup.

Does this need ceramic coating or paint before install?

Not required. Stainless resists heat discoloration, but if you want a specific finish, prep and coating can be applied pre-install. Bare stainless will develop a natural patina over time.