Search by number: 2007 GMC Full Size Pickups 8.1L 8 Cyl Alternator ProAmp 11076 $118.00 each OPTIONS: 4 Pin; Bosch type unit; Standard 100 Amps; Classic Body ProAmp 8292 $135.00 each OPTIONS: 4 Pin Regulator Plug; Delco unit 145 Amps; Option; Classic Body ProAmpN 8292N $149.00 each OPTIONS: 4 Pin Regulator Plug; Delco unit 145 Amps; Option; Classic Body 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