Well, if you get a 12SI alternator, you can just bolt in in place of your old alternator. You can also get a plug adapter kit that will bypass the external regulator and provides the correct pinout to plug in the alternator. 30 minutes later and you will be done.
Here is a link with info, and down at the bottom is a list of what to ask for at the parts store to get the alternator.
http://www.madelectrical.com/electri...elcoremy.shtml
Here is the adapter kit for bypassing the regulator and plugging in the alternator.
https://www.classicindustries.com/pr...s/ca27555.html