Search by number: 1991 Chevrolet Caprice 5.7L 8 Cyl Alternator ProAmp 7864-5 $101.00 each OPTIONS: Optional 124 Amp Police Option ProAmp 8165-11 $102.00 each OPTIONS: Standard 100 Amp wo/Police Option ProAmpN 8165-11N $128.00 each OPTIONS: Standard 100 Amp wo/Police Option ProAmpN 7864-5N $158.00 each OPTIONS: Optional 124 Amp Police Option 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