The H233B is more on par with a D44 than a D60. It does have a bigger ring gear (somewhere in between D44 and D60 size), but the shafts are D44 size. On the D44, it's typically not the diffs that fail; it's the shafts, and moly shafts cure that issue. The 44 is great for up to 35" tires. Anything bigger and I'd go to a D60.

(remember, we're talking old school D44's here, and not that joke of a D44 variant going in the 2005+ Nissans.