Ah, you see what I did there? I deliberately made a mistake to see if anyone would notice.... What I should have said is there are some nice maximizer upgrades for the stock size diff:-
http://www.rc-monster.com/proddetail...zerdiff&cat=47
Thats an alloy diff cup, and modified gears for better durability. GARC also sell alloy diff cases which are really nice and not too pricey, add to that some RR gears maybe and it would be pretty solid, or go the UE route and do the whole lot in one sh-bang.