3.73's 0r 3.90's

[wickedcobra]

That is a great question, I have a 2007 and an auto car. My car came stock with 3:31 but I was thinking of also going to 3:73. The dealer will do it and give a 1 year 12k warranty. Does any one have any feed back on 1. s197 auto 3:73 gear change and 2. Having the dealer do it?

What does the dealer charge? What do use you your car for, daily driving or just weekends?