Search by number: 1980 Porsche 928 4.5L Alternator ProAmp 14572 $128.00 each OPTIONS: 85 Amp SEV Unit ProAmp 14602 $219.00 each OPTIONS: 90 Amp Paris Rhone Unit 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