4.10's
 

:) I am about to have to go inside my rearend to make a few repaires and I am thinking about changing to 3.73" or 4.10's. What would be best since I currently don't go to the track but I do street race on occassion. Also how do these gear changes affect the gas mileage. I currently have 3.42's.

4.10, the difference between 3.73 and 3.42 is minimal (i have two 6 speed cars, one of each, very subtle difference.)