Which Hybrid V2 Diffs Should I Get ?

I have the neu 1515/1y and mgm 160 with 4s lipo and I plan to use the revo tranny locked into second gear on my revo3.3...do I need the V2 revo hybrid diffs to hold up to the Neu 1515 ? Which diff (truggy or buggy) should I get? Do they come completely assembled or do I have to shim etc?...also will the stock driveshafts hold up? Anyone using the new traxxas cvd's yet?