Yes, certain parts of the 8.25 are stronger than the D35, but don't waste time with the 27-spline version of the 8.25. The axle shafts are just as weak as the shafts in the D35. The 29-spline shafts are a little stronger and it's usually a cheap enough upgrade to warrant it. However, if you have the funds, a D44 is a much better upgrade.