Search by number: 1991 Ford Thunderbird 3.8L 6 Cyl Alternator ProAmp 7716-10 $107.00 each OPTIONS: wo/Supercharger Standard 65 Amp ProAmp 7735-10 $121.00 each OPTIONS: wo/Supercharger Option 75 Amp ProAmp 13212 $164.00 each OPTIONS: w/Supercharger ProAmpN 7716-10N $124.00 each OPTIONS: wo/Supercharger Standard 65 Amp ProAmpN 7735-10N $154.00 each OPTIONS: wo/Supercharger Option 75 Amp ProAmpN 13212N $234.00 each OPTIONS: w/Supercharger 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