Do I need gaskets or studs to install this?

The manifold itself ships as the casting alone. You'll need exhaust gaskets and mounting hardware from your machine shop or fastener supplier to complete the job — standard stuff you'd grab anyway for any turbo install.

Can I run this raw or does it need paint?

Stainless steel won't rust in the engine bay, so you don't have to paint it. If you want cosmetics or color-match to other parts, that's your call — a local powdercoater can handle it if you go that route.

Will this bolt straight to my engine or do I need adapters?

This manifold uses factory mounting points, so no drilling or custom brackets are required. Test-fit it on your block before committing to your full turbo kit build — flange fitment to your turbo and exhaust piping is on you to verify.