I heard that 4.10s are what people like in the auto, 3.73 in the stick.

 

I'm gonna say 4.10's as well. I have 3.90's in a 5 speed with full boltons + a 100 shot of nitrous, and it's perfect...street, quater mile, and just in general. The auto need a little more help, so i think 4.10's would be your best all around gear.

 

I am biased towards 4.10s so that is what I think he should get. The rpm difference between 3.73 and 4.10s at 60 is around 300rpm from what I have read. 2500 or 2800rpm, not a big difference to me.

 

bone stock i killed my friends full bolt on minus headers auto 03 gt...you should see what happens now that i have 4.10's

4.10's if you plan on staying n/a or keeping it under a 100 shot

 

so your saying just with your gears you beat yor friends 03 gt that has bolt ons and headers?

 

my friends auto GT had tb plenum CAI tune under drive pullies x pipe and magnaflowcatback and i (with the 4.10's) easily put 1.5 cars on him by 90

 

I have an auto with 373s. Guess what my next mod is, 410s or even 430s. Don't get 373s NA. You will regret it, TRUST me!

 

99-04 stangs work best with 4.10s.

 

haha that's awesome! i am planning on doing all of that to my car, but I want to get the gears done first. what did you do with your speedometer so itwasn't off? do they have speedo gears like they do for the fox's? I'm planning on just getting a sct so I can just adjust it through that.