OK, so after I install my new 4.10s, I just have to enter "4.10" in the gear ratio section and I'm done? Or are there more things to change? Some of the other data is not accurate in that section, so should I also change it to reflect an F-car with manual transmission?

 

yes put all the correct info in there
hit calculate
hit apply
done

 

yes change it to f car and six speed or the speedometer scaler will be off and the speedo will be wrong.