1st. Disconnect your ground cable from the battery

2nd. Disconnect the cable from the top of the alternator (7 or 8mm) and Disconnect the 4 prong plug, usually green in color.

3rd. Unbolt the bolt on the top that secures the alternator bracket to the block. Leave the bolt that connects the bracket to the alternator because that is a pain in the ass and will just waste time.

4th. Jack up the drivers side and take the pivoting bolt out of the bottom of the alternator.

5th. Now the alternator should be free and you can move it. You can easily guide the alternator behind the block up through where the fuel filter is. Its a tight fit but it will fit.

6th. Buy a new alternator but make sure its not an Auto Zone and make sure you get a year or lifetime warranty. Best bet is an OEM but if price is a problem go to NAPA. And send the old one out and get it fixed up and have it push 100amps!