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96-98 Vortec Alternator Upgrade AD244
If you want to upgrade your alternator and don't want to modify your wiring harness, heater hose tubing, and buy an additional bracket the AD244 is the way to go. Its a direct bolt on replacement, the only thing you will need is the belt made for running the 140 amp alternator (its available at any part store just ask for a belt and tell them you have the 140 amp alternator)
Some run Sanden compressors which already require a longer belt than stock. The addition of the AD244 requires the belt to be 1 inch longer.