ok.. lets see if i can tell you something.. do you have a tach? if you run those 31's... you will be pulling around 2400 rpms with the 3.73 at 60, 2650 with the 4.10's at 60, and if you go with the 32's 3.73 you would be running around 2350 at 60, and 4.10's about 2575 rpm's.. hope this helps you out some.
survival is instinct, but living takes guts
survival is instinct, but living takes guts