Join Date: Jun 2007
Location: Chicago, IL, , USA
Year: 1997 SE
Guessing it's for the 1500 on your profile. You should get a Compufire alt, of if you don't want to shell out major bucks(about 3 bills), just take your alt to a rebuild shop and they'll probably charge about a buck fifty or so.
To my knowledge, the GM alt that you asked about is for a 1200 modification to replace the stator, not for your 1500.
Anyway, just disconnect the battery, and pop off the leftside lower cover(by your foot, the trapezoid shaped one). And pop off the alt, couple of bolts and the plug/harness line.