Think this will help keep the wheels from spinning

[YHELLO]

Off the line with an X-charger installed? http://www.newtakeoff.com/mustang_v6...373_ratio.aspx
Or should I go for the 4.11's. I still want to be able to drive on the highway without killer rpm's.

[V8orBust]

manual or auto?

[Blackgt09]

wouldnt the 4.11 leave you screaming on the highway?

[JerseyStang07-Brian]

true but if he is worrying about off the line only that doesnt matter. 4.10 for auto and 3.73 for manual

I duno thats kind of a generalization. Depends on tire size, what hp you are making, if you wanna be able to race it on the track. If you can tell me those things that will help you get a better answer.

[YHELLO]

V-6, Auto, 18's, expecting 295-300 hp.

I was looking for your tires overall diameter, not rim size. What tire size? Basically stock? If so then yea i would have to agree with Joyseystangs answer.