A Whole Looooottta those came from under F, M and J bodies.
Follow the advice of the above.

This is a listing I have:
•2.26:1 - Used in many civilian M-bodies over the years
•2.76:1 - Used in 80s Dakotas
•2.93:1
•3.21:1 - Used in 90s Dakotas
•3.23:1 - Used in many Slant 6 cars from 1963-1969, and 80s Dakotas
•3.55:1 - Used in 80s Dakotas
•3.90:1 - Used in 90s Dakotas
•3.91:1 - Used in 67 Formula S Barracudas with power-lock

Here is the forum/thread it came from:

http://www.dippy.org/forum2/index.php/topic,73.0.html

Enjoy!
CC.