89 Pontiac Safari alternator is the CS130 with a v-belt pully already on it. I suggest go to a parts store such as O'Reilly and have them show you one. If they need to order it, it will take perhaps a day for them to get it.
This is the Mad Electric article with the chart in it:
http://www.madelectrical.com/electri...elcoremy.shtml
They did not include anything about the CS-130. That article is just about the 12SI and 10SI.
Here is the article I like about the CS-130:
https://web.archive.org/web/20220703...20IN%203.0.pdf
Bottom line on the CS-130 is you can verify by having a look at it that the mounting ears and pully line up and should be a physical match to the alternator you have. Then get the right connector for it and a resistor. I use a 2 wire connector and hook up the sense wire, not just the single L wire as suggested in the American Autowire article. You can get the
ACDelco PT2145 adapter plug as mentioned on the previous page.