We are planning on installing that assembly during the January work session.
Holes will to be drilled and tapped in the frame to hold it in place.
Here's a view of the cross tie assembly in the 3D model:
Please note that this model leaves out some of the pins and bolts.
As you can see, the front suspension gets a bit complicated up in the front. Part of the complication was that we made the
front frames deeper in front of the lead drivers, as the original design was not strong enough there for the calculated stresses. This
lowered the crosstie, which caused the lead truck equalizer (the gray-blue piece) to interfere with the cross tie. The cross tie had to move
up vertically to give the equalizer clearance to pivot up and down with the suspension.