Ya i have it on my car. 3.42 with Auburn LSD. Coming from the factory, i doubt it does any harm.

 

Gmd is your car an a4? but really is it lol???

 

Never mind the previous post, however on ebay right now there is a 3:42 gear at 5 dollars that apparently fits camaros due to the donor. Which had 12k miles and owned by an old man so it prolly isn't abused. Just FYI.
OEM 3:42
http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW

 

thats awsome but its probly gonna be easier to just get a full rear end from a Z

 

Yup actually it is an A4, assuming that means i have a 4-speed auto.