FLM Hybrids+1/8 diffs or UE 6 diffs w/aluminum bulks?

[SpeedAssault]

Looks like good info but I'm a bit confused.

I need a stronger diff case or bulk head combo one piece.

Currently using LST gears in Losi aftershock alum cases with modded Emaxx 3906 grey bulkheads

The Losi ring gear is .38mm or .3inch larger than the FLM hybrid bulk but it's a 1/8 gear set, so I'm confused why they say 1/8 fits when clearly it does not.

If I want a Aluminum Hybrid bulks then what gear sets do I have to choose from ? I want speed not more torque.

I have a custom made AWD 6s 1/5 on road Rev-Osi revo & losi drivetrain.
If I need to ditch the revo and losi diffs and axle shafts I am fine with that, so what do I need to go stronger ?

it looks like ofna or hot body gears in FLM bulks, is that correct ?

thank you