Search by number: 1980 Pontiac Firebird 4.3L 8 Cyl Alternator ProAmp 7145-6 $55.00 each OPTIONS: Optional w/AC 1st Prod ProAmp 7127-12 $101.00 each OPTIONS: Standard w/AC or HBW ProAmp 7137-12 $170.00 each OPTIONS: Optional w/AC 2nd Prod ProAmp 7127HO110 $254.00 each OPTIONS: Custom Built; 110 Amps; 15.1V; Replaces stock alternator with stock wiring ProAmp 7127HO110PFC $333.00 each OPTIONS: Custom Built; 110 Amps; 15.1V; 1 Groove billet pulley & fan ProAmpN 7127-12N $117.00 each OPTIONS: Standard w/AC or HBW 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