Strongest small diffs?

[Serum]

Strongest; 7075 maximizers with M3 bolts. but these are an overkill, the FLM cups are unbreakable too (and they cost less) Shimming is the key to a successful diff The FLM"s have got a flawless working warranty

For the aluminum case; doesn't matter too much, as long as the flex is gone.. (you might consider using the new T-maxx 3.3 housings, they use 4 instead of 2 screws)