Does this manifold come with gaskets and bolts?

The manifold assembly is included. Verify your existing RB engine has the correct mating surface, and source OEM gaskets and fasteners to match your specific engine block — these aren't bundled.

Will this fit my engine bay without custom welding?

Side-mount design minimizes clearance conflicts, but engine bay layout varies. Test-fit before committing to turbo installation; some RB builds may need minor bracket work depending on your accessory setup.

Does stainless steel need ceramic coating or heat wrap?

Stainless resists thermal cycling on its own, but heat wrap or ceramic coat extends component life and reduces underbody temps — both are optional upgrades based on your build goals.