funny that.
Was thinking the other day, whilst staring at the drivetrain, thinking it wouldn't be hard to reinvent the gearbox casing.

Not by just making the whole thing out of alloy, but to reduce it
down to just 3 interlocking "walls" with 1 bearing holder each.
(yes you'll have to remove half the thing to access the diff ala 414)

The top & front could be left visible and just covered with lexan;
there'll be 2 holes on the front edges of the side plates for the
shocktower, small clamps ala 415 for the sway bars.

hmmm...!