4.10's was one of my best mods i've done so far to my truck....I've been keeping all my timeslips and each time i do a mod i go to the track to see how much of a improvement it makes.. I'm not sure how much it will help you out since you have 3.73 gears but it will help out a little on your 60` times... with the factory gears in mine after i swapped my 4.10s in i dropped .2 tenths in the 1/8th.