Personnaly I cant answer your question on that detail. Although, IF YOU HAVE A 5 SPEED, tell me for example whats you RPM in 3rd gear at 60mph and I'll be able to help you. Need you rear tire size also. ex: 245/50/17
if you think you may have something better in there, then what you can do is jack the rear end up, and put a chalk mark on the driveshaft. Then turn a rear wheel one complete revolution and count the number of revolutions of the driveshaft. So about 2 and 3/4 turns of the driveshaft would be 2.73s, 3 turns would be 3.08s, 3 and 1/2 would be 3.55s etc etc - you get the idea.
if you think you may have something better in there, then what you can do is jack the rear end up, and put a chalk mark on the driveshaft. Then turn a rear wheel one complete revolution and count the number of revolutions of the driveshaft. So about 2 and 3/4 turns of the driveshaft would be 2.73s, 3 turns would be 3.08s, 3 and 1/2 would be 3.55s etc etc - you get the idea.
That's the best way. If the speedo hasn't been corrected, then using the factory tach & speedo will not tell you that you have different gears. Have to use a GPS for the same trick.
Corral has a calculator for this kind of stuff, as well: