Gear ratio

[nladnow03gt]

I have an 03 GT. I was wondering what my gear ratio was in my GT. At 70 mph in 5th gear I'm taching at about 2150 rpm and I'm pretty sure I don't have a stock rear end. Some one please help.

 

[2002montrealGT]

I would assume 3.73, 4.10 i do 2400~ 70mph

 

[Mustang5L5]

3.73's.

Stock T-3650 with 0.62 5th gear ratio, 3.73's and stock 245/45/17 tires comes out to 2118 RPM at 70 MPH