Re: complete rear diff.
Off topic but if you have a traction issue get a R compound tire and you will no longer have a traction issue! Something like TOYO PROXES R888's or the venerable Mickey Thompson drag radial, or the Nitto NT-01 or NT-05's. These tires dig and GO! I found my TOYO PROXES difficult to spin no matter how hard I tried. Just a thought. Mark