Hey guys,  Im running a stock engine in my 93 tracker, has 4 6" off road lights and a 9000 lb winch.  Looking into upgrading my alternator to a heavy duty one.  Has anyone done this and wher did what did you use.

Many of us have upgraded to the larger GM alt anywhere from 85 to 105 amp. There is a lower bracket available from TrailTough and others that is a bolt on, but the top bracket needs to be modified to fit the bigger alt. Give TT or one of the other vendors a call and they can hook you up. There are also kits available including the alt on ebey but I have no personal experience with those vendors.