I got mine from
click me granted it was a bit extra to have it powdercoated black.
There's really not much to it. You have to "notch" the alt. bracket (stock) to make it fit but it takes about 5 mins with a dremel tool or air grinder. you also need to upgrade the wiring to the starter solenoid, again not hard. I have my powdercoated black stock alt. bracket if you are interested (for a fox body).
here is a how to---->
how-to