I am needing to up grade on my shafts or do a axle swap. I am looking at getting a set of Nitro axles with 300m u joints. or would it be better to run a stock 60? I am running 36in tires with 4.0 and a terra low trans case with 5:13 yukon gears. I am going to go back to 38s sometime. let me know your opinion.