[silentracer]

i was thinking about doing the 4th gear mod and i wanted to know what the battery life was after the mod. i've done the zz motor pinion mod but i am still looking for some additional torque. i know the motor needs to spin more rpm to move it the same distance but is it neccesary to add more cells? is the runtime still comprobal to the stock time or at least to a reg zz? also i was reading at chili's site for my tut and i'm a little confused on where you would put the spacer for the motor and what else do you have to do to the motor placement to make it run right.