ok so i searched on this but i couldnt really find anything on it. Ok so i decided to wait on the differntial becuase i dont want to waste the money when im gonna make some serious power here in a year and have to upgrade to the 8.8. I decided just to buy some lowering springs and just 3.73 gears. I am curious to how hard it is just to install new gears. I have been thinking about it and i dont think it seems to hard. I know obviously i got to take the differential out and unbolt the gears and and put the new ones on and put in the new pinion gears. I have been thinking about it and the shims for the backlash on the side of the differential as long as i kept the same exact ones on the same side would i have to change any of that since i am only putting new gears on and not a new differntial. Would the only thing i need to worry about be the new pinion and getting the mesh pattern correct on there? If anyone has a step by step on how to do the gears just on the v6 for an 02 i would greatly appreciate it. I just want to know what to do. summer is coming to an end and i would like to order the stuff tom and get it done on the following weekend. thanks.