You should buy some 31 spline axles and trac-loc and have them installed. It will be way less then 4 grand. Throw some gears in there at the same time. I did doughnuts into a curb
and broke my axle, disk brake and a wheel. After I got the insurance money I had 31 spline axles, 4.10 gears, 31 spline trac-loc, diff cover, and two 17x10.5 wheels with nitto drags on them.