I am trying to figure out what gears I have in my formula. My speedo is off by about 10 mph and I did the calculation
(60mph X 3.23 / 2.73=70mph) which is about right.

My next question is, I have read on here that if your car came with 1-2-d-od then you have 3.23. Well my car has 2-3-d but if I pull the shifter down I have another selection below 2 which is not on my console. Does this mean my car came with 3.23? I have also tried jacking the car up and counting the axle to wheel ratio. Any info would help. Thanks guys