Our billet aluminum alternator brackets are the best option when cleaning up the front of your engine. Precisely CNC-machined from 6061-T6 aluminum, they are guaranteed to provide a perfect fit and secure grip. This bracket comes complete with the spacer needed to use with out SBC Gilmer Pulley Set. The bracket is available in Black, Chrome, and Polished. This is for the GM 10SI style alternators and the long water pump. Passenger side mount.