Will this bolt straight to my factory exhaust manifold studs?

Yes, it uses the same factory bolt pattern and studs. No drilling or adapter plates needed — pull the old manifold and bolt this down.

Do I need to ceramic coat or paint this header?

Stainless steel won't rust bare, so coating is optional. If you want the glossy or matte finish look, prep the surface and apply high-temp paint or ceramic coating before install.

Does this come with gaskets and hardware?

Header assembly only — you'll need to source new exhaust manifold gaskets and bolts separately, or reuse your factory hardware if it's in good condition.