i got 4:10 gears. should i up grade my axles to 31 spline and with or without c clips elimantors. im not sure what c clips elimantors do but if i can keep my stock axles i will do that
You can keep the stock axles, but if you want to upgrade to 31 splines you also need a 31 spline differential i.e. a traction-lok.
The c-clips are what hold the axles in the rear-end. For a street car they will be fine. When you start to put down lots of power, or in some forms of racing, you need/are required to run c-clip eliminators; to keep from an axles coming out of the rear-end.