could some of you help me compile a list of cars to get this alternator off and other cars with the 12si im pretty shure it will help me and others. thanks

Lets look at the old parts book for interchange shall we! :D

Wow...looks like quite a donor list for the 12SI alternator.

There is too many vehicles to type out or even cut and paste. So, here is what I would do. The 12SI alternator is part number AL559X in my Bosch alternator book.

Go to www.acdelco.com (http://www.acdelco.com) and click on the "competitors cross reference". Type in the Bosch part number "AL559X" and hit enter. Then click "Find Usage" to see a vehicle list of donor canidates!

Joe