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wrote:

2.) Torsional Stress- Again...will the "stabalizing tongues" absorb
some of this? Also...how far out from the torsional stress point(s)
will the load be?

None.
The "tongues" will only help (partial) with bending in the horizontal
plane. But you have torsion in the vertical plane.

Scenario:
The bike is on the stand, you go around a sharp corner. Now some math:
CG of bike is about 500mm off the stand, bike wheights about 110kg. You
do have a moment of 550Nm if g is 10m/s^2. Now I'm too lazy to calculate
the stress, because it is a waste of time.
Don't forget that you have to add it to the bending forces.

BTW:
If it helps, you can laugh, but it won't stiffen the sick construction.
It will only work if you add 2 more connections (rear of bike + handle
bar connected to the car).

Nick
--
Motor Modelle // Engine Models
http://www.motor-manufaktur.de