rearend codes

I am looking for a rearend in the salvage yards for my mini stock mustang. Does anyone know a website that will give me the rearend codes (you know the ones on the drivers door) so I can get the particular gear that I am looking for . thanx. wnk.

M=2.73
E=3.27
Z=3.08

M=2.73
E=3.27
Z=3.08

For my car, that is. Here are some links that should help too:

http://www.ultrastang.com/Rearinfo.asp?Page_ID=5

http://www.mustangsplus.com/tech/stats/stat04.htm

http://www.sspmustang.org/technical/drivetrain_specs.htm

If you need more, just go Google (http://www.google.com) and search for "axle codes for mustangs" and you'll get a ton of codes.