E-Maxx diff advice needed.

[mkrusedc]

I have been reading a bunch of threads about this and can't make up my mind. What would you do?

I have gray bulks, OE diff case, FLM Al cup, modified ring gear with 3mm screws, and 3.3 slider shafts.

1. Buy FLM hybrid bulks, the 1/8 HPI drop in diff, 3.3 out put shafts
   or
2. Buy UE diff cases and use my existing gears?