Chevy SBC 350 GM Chrome 120 Amp 1 or 3 Wire V Belt Alternator & Bracket Kit SWP. GM 1 or 3 Wire 120 Amp Alternator. New 120 Amp upgrade replacement alternator for GM 10SI applications. This chrome finish alternator has an internal voltage regulator. Comes with a one groove bolt on V-belt pulley.High output, great for today's increased ignition, sound, and accessory power demands. It can be wired with a one-wire or three-wire set-up. This is a brand new polished aluminum alternator mounting bracket & tensioner for SBC with Short Water Pump. This bracket kit can be used with serpentine/V belt applications. Mounts on upper Driver side, This set is designed for use with a SHORT water pump. Not to be used in conjunction with power steering due to belt interference with the power steering pump. Alternator Mounting Position: Driver side. 5- Chrome GM 1 or 3 Wire 120 Amp Alternator. P Professional Installation is Highly Recommended (No Instruction and Wiring Diagram Included).