Will these brackets bolt directly to my engine without modification?

Yes — they're designed to use factory mounting points on big-block Chevrolet engines. Test-fit before final tightening to confirm alignment with your specific block and accessory configuration.

Do I need to polish these further, or are they ready to install?

They ship polished and ready to go. If you prefer a different finish, light buffing or anodizing can be done, but the brackets are installation-ready as-received.

Are all fasteners and hardware included?

The bracket set is included. Verify your engine's fastener specifications and bolt sizes against a service manual — sourcing hardware locally ensures proper fit and torque specs for your application.