Search by number: 1991 Chevrolet G Series Vans 5.7L 8 Cyl Alternator ProAmp 8165-11 $98.00 each OPTIONS: Optional w/AC 105 Amp 6-Groove Pulley ProAmpN 8165-11N $123.00 each OPTIONS: Optional w/AC 105 Amp 6-Groove Pulley ProAmp 7921-11 Call for Price OPTIONS: Standard wo/AC 85 Amp 4-Groove Pulley Why is there more than one unit for my car? Look at the TECH SPECS when more than one unit is shown for your car. AMPS (ELECTRIC CAPACITY): must match you vehicle electric requirements. *** Call us if you are looking to increase your unit capacity! OE ALTERNATOR MANUFACTURER: It is recommended to match the Make of your alternator